Topical Blog Week #5 (Due Wednesday)

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What we would like you to do is to find a topic from this week's chapter that you were interested in and search the internet for material on that topic.

Please be sure to use at least 3 quality resources. If you use videos, please limit it to one video.

Once you have completed your search and explorations we would like you to:
1a) State what your topic is.
1b) Discuss how the topic relates to the chapter.
1c) Discuss why you are interested in it.

2) Next, we would like you to take the information you read or viewed related to your topic, integrate/synthesize it, and then write about the topic in a knowledgeable manner. By integrating/synthesizing we mean taking what your read/experienced from the internet search organize the information into the main themes, issues, info, examples, etc. about your topic and then write about the topic in your own words using the information you have about the topic.

3) At the end of your post, please include working URLs for the three websites. For each URL you have listed indicate why you chose the site and the extent to which it contributed to your post.

24 Comments

My topic for chapter 4 is face recognition. Face recognition is explained in a blue box in the textbook, but not a lot of details are provided. I am interested in this because as we all know, technology is improving very fast every day; and before we know it, everything will involve face recognition (if not fingerprint or iris recognition): car, phone, house, work place, school… and so on. Any recognizing systems can bring up the issues of privacy, and I would like to know how facial recognition can invade the problems of privacy. I also want to know more about how face recognition work, and thus catch a glimpse of the future.

Face recognition is a technology that identifies a person using a digital image of them. The system measures the overall features of the face, including the distances between every feature presented, before pulling out the matching features from the data base. Matching features from the data base are obtained by initial enrollment, where individuals take several high quality pictures of themselves, from different angles and under different lightnings, with their hair pinned up, as well as pictures of both with glasses and without glasses. Facial movements should be eliminated since too much movement can distort a face, and hence less accurate face recognition systems. The enrollment does not have to be a still image of an individual; it can also be a moving, behavioral sample to be stored in the database of the facial recognition systems. Many more enrollments should be done as time pass by, since facial features change (hair grows longer or hair style change, or someone decides to grow a full beard), to ensure the most accurate possible analysis to be done.

After the initial facial or behavioral enrollment, the computer analyzes the features, and comes up with some measurements of the features; such as the width of the eyes, the distance between eye brows and the jaws, the length of the face… etc. There is also another new trend emerging, analysis of skin texture, where the computer takes into account of the condition of the skin, under different lightning as well as the spots and lines on the face. This information is stored until a surveillance camera (say, in a lobby of a big business company) captures an image of someone walking into the building. The computer will then run through all the data stored until a match comes up. When the new sample is matched with the enrollment sample, the computer will also pulls up the information regarding the visitor. The receptionist will recognize the visitor and greet her in an appropriate manner, or even direct her to the office before any question is being asked.

To match up the data with the new sample captured, hard ware and software are both required. Hard ware such as surveillance camera and computer are definitely needed, as well as software to store all the data, calculate measurements, process and analyze facial features, and matching up the new sample. It is best if the hardware and software are the same models. It is also recommended that the better the resolution of the camera is, the more accurate analysis will be done on the software. This is one downside of the face cognition systems: pricier tools.

This technology can be very useful and beneficial because unlike any other biometric recognition, an individual does not have to precisely place his fingers on a scanner, or hold his eyes still for an image to be captured. People do not have to stop for the camera; the camera can follow them and pull out the information without those people even being aware of the system. This can also be a way to prevent identity thief. For other biometric recognition, villain can cut off victim’s hand for fingerprint recognition, or take out the victim’s eyes for iris recognition. It is very hard to not notice some body walking into a business building with a chopped off head in their hand.

There are also some downsides regarding face recognition systems. Privacy issues can emerge, as people may not noticed that before they even introduce themselves, some one behind the computers already know who they are as well as their background information. Also, there are many other factors that can contribute to inaccurate recognition, such as lightning, accessories (sun glasses, hats… etc.), hair change, beard change, and facial expressions (this is why in some countries it is required people to keep a neutral face for their ID photos).

http://www.ex-sight.com/technology.htm

Not too much detailed information is provided on this website, but it gave me a good start. I always find it easier to start with website containing basic knowledge of one topic before moving onto another more complicating information.

http://en.wikipedia.org/wiki/Facial_recognition_system
A lot of details provided on Wikipedia, as always. I like this website because both benefits and limitations of this topic is discussed.

https://www.youtube.com/watch?v=mdhvRNYX0PI

This video provides a lot details on how enrollment is done, and how it can be used.

Chapter 4 Topical Blog

My topic for chapter 4 is feature analysis. This topic relates to the chapter as the chapter discusses many theories of object recognition and how we determine information from complex stimuli. From this theory, we find that object recognition is a high-ordering process within our brain. Feature analysis is also linked to bottom-up processing. This concept is not directly linked to our textbook, although it leads to it, but it is a concept that is discussed among my resources. After reading my resources, I see how you can tie feature analysis to bottom-up processing, which will be discussed later in this post. Feature analysis also connects to the experiments by Hubel and Wiesel within our textbook concerning the neural activity of cats and monkeys.

Feature analysis interests me because it explains how individuals recognize what an object is after we have analyzed the simpler components of a stimuli. It is intriguing that feature analysis illustrates the recognition of objects in a high-order processing within our brain. Our brain is only capable of processing certain “chunks” of information at a time in a way that makes sense to us in order to understand.

My resources stress the concept that feature analysis is a bottom-up processing model. With feature analysis, individuals take simpler features of incoming stimuli and determine what an object or problem is by putting the stimuli together as a whole. This is a very similar concept to bottom-up processing. The examples of feature analysis in our textbook lead to this idea of bottom-up processing.

Individuals also try to match the recognition of pattern with those patterns within our memory to determine what a concept is rather than using a template. Therefore, small components that are held within our long-term memory are connected to whole bits of sensory information to conclude on the object or problem as a whole. Our brain looks for “critical features” of the components to distinguish one unit from another.

My resources also discuss the experiments by psychologists, Hubel and Wieser. During the 1960’s, Hubel and Wieser were looking at the visual cortex of cats and monkeys. These psychologists inserted small microelectrodes into the visual cortex of a cat and monkey in order to study the neural activity of their brains when simple patterns of light were flashed before their eyes. From this experiment, Hubel and Wieser determined that only some nerve cells responded to vertical lines while others only responded to horizontal lines. This has lead psychologists to believe that humans have cells within our visual cortex that have specific duties of synthesizing certain stimuli over other stimuli. Therefore, this is why feature analysis is so important to our understanding of concepts and why our brain is capable of taking small components to then interpret larger ideas.

http://psychology.joelx.com/psychology-355-focus-3/
This URL contributed to my post as it explained the connection between our memory and sensory input and how this leads to object recognition. This website also discussed the connection to bottom-up processing.
http://www.intechopen.com/download/get/type/pdfs/id/5795
This URL heavily contributed to the understanding of bottom-up processing and the definition of feature analysis. Therefore, it linked the two concepts together for a better understanding of object recognition.
http://www.cns.nyu.edu/~vessel/courses/NeuralAesthetics/Readings/07_Mar_8/bruce_ch9.pdf
This source discussed the experiments led by Hubel and Wieser. It also explained critical features, how our brains interpret words and letters, and the background to feature analysis.

1a) State what your topic is.
Template & Prototype matching
1b) Discuss how the topic relates to the chapter.
This topic is relevant to the chapter because in the book our main concern was object recognition. Template and prototype recognition are two very important ways in which we recognize the objects in our environment.
1c) Discuss why you are interested in it.
While reading the chapter I found many of the topics dealing with object recognition to be interesting but template matching and prototype matching theory were the most interesting. The topic interested me because it seems like we have an infinite number of images in a bank that we can recall at a moment’s notice. While I was reading this section I couldn’t help but think of our brain as the smallest but most densely populated fine cabinet of all time.
2) The template matching theory suggests that pattern recognition occurs when a match is made between sensory stimuli and an internal mental image. Template theory also suggests that we recognize a pattern by comparing it with our set of mental templates or mental images. After comparing the pattern we then choose the exact template that most recognizably matches what we observe. Template matching theory can be useful in fields like facial recognition and medical screenings, some systems have even been developed and used to count the number of faces that walk across part of a bridge within a certain amount of time, this technology will be seen more and more because of marketers and advertisers attempting to tailor their product to a specific customer. While these systems are very useful, in order for our perceptual system to use the template theory we would need mental templates for every possible percept of every stimulus we are trying to recognize. Template theories also fail to explain some aspects of the perception of letters. We are able to recognize letters in almost any variation of size, font, and orientation. However, the template theory suggests that we have a mental template for each possible size, font, and orientation for every letter of the alphabet. What is amazing to me is it seems like an impossible task for us to store and retrieve so many templates let alone create new ones but we seem to have a huge number stored in our brain.
Prototype matching theory occurs when a match is made between a perceived pattern and an abstracted mental pattern. Unlike the template matching this theory is not as precise or exact about matching a pattern. The prototype is highly representative of a pattern and it seems to explain perception of shapes. Humans are able to form prototypes even when we have never seen an exemplar that exactly matches the prototype we are perceiving. One examples of the prototype theory are arrays of dots, a triangle, a diamond, an F, an M, and highly simplified line drawings of faces. Prototypes are usually used for witness identifications situations where a well-defined face is created by the police with sketch artists or ID kits. Prototype matching is all around us, the prototype may even serve as the closest representation our mind can conjure only to unlock the memory.

3).
http://en.wikipedia.org/wiki/Template_matching
This site helped explain template matching a little better and also gave good examples of it in the real world.
http://en.wikipedia.org/wiki/Prototype_theory
This site was useful in giving more background information about prototype matching as well as a much broader picture of how it is used today and how it will be implemented in the future.
http://www.cse.psu.edu/~rcollins/CSE486/lecture07.pdf
This site is a pdf that gives tons of examples of different template matching. It also goes in depth about how to distinguish differences in images.

I have chosen to research and write about eigenfaces. This was a new topic I’d never heard of before and found really interesting. It seems like it would have a lot of interesting and complex components that would go into designing technology like this. This topic relates to the chapter because there was a portion of the chapter that focused on eigenfaces and explained what they were and how the technology recognized faces differently from the ways our brains recognize faces.
Eigenfaces were given their name because the programs that use them use what is called an eigenvector, which when compiled together is what makes the eigenface the technology can use to recognize real faces. Ghost-like images are created and used to search for consistent features in real life scenarios to be compared to what the system has stored in eigenfaces in the database.
This technology was the first known facial recognition technology to be used. It is still a considered a baseline comparison method. Any new or other methods that are created in order to complete facial recognition tasks would therefore be expected to to be more finetuned and more versatile against expression and environmental changes from faces. It will be interesting to see how this sort of technology is developed over time and what uses are found for it in the future that could be helpful and beneficial to help enrich or protect society.
There are several math components used in the development of the eigenface. Images are shown to the computer of the face to be stored, each is transformed into an eigenvector, a mean image is obtained, and quite honestly, the process was lost unto me after that. However, I did understand that the end result had what was referred to as the “ghost-like” images that uses all the eigenvectors, or each sample picture, to store the eigenfaces. They allow the computer to compile the different slight variations of the same face and then potentially recognize it in more scenarios.
Statistical variations between face images are found and stored to be used in identification of the face when encountered again. The program has an easier time recognizing the same face with different expressions than it does the same face in different lighting. This fact was used to express how eigenfaces are functional and more successful in local variations, but not as much in global variations.
There are other variations that can be created focusing more on specific facial features. The store of this information could help overcome some of the lighting variations that with eigenfaces can cause problems and flaws in correctly identifying a face in different lighting. These features, instead of eigenface, are called whatever the feature is – eigennoses, eigeneyes, eigenmouths. These eigenfeatures can also be combined with the overall eigenface in order to help with accuracy.


http://www.pages.drexel.edu/~sis26/Eigenface%20Tutorial.htm
This site was helpful because it demonstrated the steps and math that goes into creating eigenfaces. While I wasn’t able to understand each specific step, it still contributed to my post through helping me to see how much goes into creating one of these and how some basic math still applies, such as the mean of the images which is essentially the eigenface.

http://www.cs.princeton.edu/~cdecoro/eigenfaces/
I liked this link because it provided a lot of visual examples of how this technique works. It showed me how the computer matches up facial recognitions, where some of the flaws are, and where some of the success is. It contributed to my post through helping me understand some of these processes in order to present them as knowledge here.

http://www.scholarpedia.org/article/Eigenfaces
This link was chosen because it simply explained what an eigenface was. It contributed to my post because it expanded information on the topic past what the book gave and helped me to understand more of what this thing actually is in order to be able to write information about it in my post.

1) For this week’s Topical blog I looked at facial recognition. Facial recognition is talked about in our text book but not a whole lot but we often are hearing more and more about it as our technology is improving very fast these days. I was upset to see that the book didn't go into greater detail about facial recognition and how it is actually apart of life and how we could use it more. Any day now we will have to be recognized by our face if not our finger prints or our eye to gain access to any object as we are gaining more technology. Sometimes this could be a good thing because everyone has different features that are not the exact same as another person and so if we are able to have these facial recognitions to get into our programs and other things like electronics then I feel as long as there are no glitches in the programs then we would have more security with having to use our face to get access. I am personally interested in this topic because I have recently went to a lecture and learned a lot about facial recognition and how it can relate to crime cases.

2) Facial recognition is a device that views or video of a person and compares it to one that is in the database. It often compares the structure shape and proportions of the face; the distance between the eyes nose mouth and jaw. With the facial recognition program several pictures are taken of the subject at different angles with different facial expressions. These facial recognition programs used facial thermography to record heat in the face and would often have the subject blink node their head for security purpose.
Often times we can learn a lot about our brains and facial recognition by looking at a caricature of a person related to a real picture of a person. Our brains start to recognize things such as faces just a few hours after birth and how the fusiform gyrus of the frontal lobe is dedicated to facial recognition. All human faces are all built the same way two eyes above a nose that’s above a mouth but each person has features that vary from person to person. So according to scientists our brains are looking for these outlining features to recognize each person not paying particular attention to specific information from each and every person that we come in contact with.

Often times we are seeing people that are criminal suspects that are being shown on surveillance cameras and other camera equipment that often shows a buried image of the suspect. This does not give us the full detail of the suspect as within the pictures they are actually losing facial expression and their specific facial features that each person has won’t be as visible on these cameras. This makes it hard for us to identify the person that is being convicted of the crime to actually be punished because we are losing their facial features that are specific to that person they may look like a similar person from similar human facial characteristics.

I think that this is something that needs to be worked on and needs to be figured out in much deeper research because if we are not able to tell the unique facial features then how are we doing any good by capturing the video if in reality the video could be of someone who is completely different than the person who is being convicted for the crime.

I found out a lot about facial recognition while doing my research, but there are still something’s that are unknown. I feel that this is something that will continue to grow over time and will continue to gain a stronger and more supportive background and research that supports it and by the end of time we will only be recognized by our facial features and not by passwords and other things like this.


http://www.wired.com/magazine/2011/07/ff_caricature/- this web page taught me a lot about how the brain actually perceives information from the faces that we interact with and how our brain recognizes them.

http://findbiometrics.com/solutions/facial-recognition/- was used to gain information on facial recognition program and how it is used to gain facial recognition and how privacy is used to make sure that the recognition of the face is from those that they are actually screening.

http://www.evidencemagazine.com/index.php?option=com_content&task=view&id=605&Itemid=160- this web page gave me information about crime scene video and face’s and how most of the time the faces are distorted and you can no longer see all of the persons facial features and this makes it harder to be able to recognize the person that you are trying to show in the video.

I chose to do my topic on facial recognition because I think it’s interesting that we recognize different faces even though we are surrounded by millions of them. I wanted to understand better how our brains are able to recognize so many different faces and the process our brains go through in order to do that. Facial recognition is mentioned in chapter 4 and I wanted to be able to elaborate on that information.

Recognizing faces is actually a very complex function of our brains. We not only have to recognize a face when someone’s standing still but we need to recognize them when their moving. Our brains have to take in a lot of information very quickly in order to recognize a face. Our brains have to use some of the same recognition skills used for a normal object, but there is a separate part of recognition that is just unique to the face.

It has been found that babies are immediately attracted to human faces when born and that they even mimic the faces of the people around them. A study was done by Dr. Yin who found a phenomenon that is known as the inversion effect. People are able to recognize objects upside down almost as accurately as when it’s right side up. However, people struggle with being able to recognize a face that’s upside down, compared to one that is right side up.

Our temporal lobe is partially responsible for helping us to recognize faces. There are particular neurons, located in the temporal lobe, that allow us to identify certain features of our faces. If the temporal lobe gets damaged, some people struggle with being able to recognize a normally familiar face. In a primate study, researchers found that there are certain neurons in the superior temporal sulcus that become activated after a monkey observes pictures of different faces. Some of the neurons in the superior temporal sulcus were in tune with the orientation of the face being viewed while other neurons were activated when viewing a face from the front view. In a study by Nancy Kanwisher, she found that the fusiform gyrus was activated much more significantly when looking at a human face than looking at an object or an animal. In another study by Isabel Gauthier, she found that the role of the fusiform gyrus might not be so much of facial recognition but it just has the ability to distinguish a specific object out of a group of those objects. So it would be capable of picking a particular face out of a group of faces.

Many people look alike and it’s important that we don’t mix them up. Our brains are trained to look at faces carefully and to find a distinguishing characteristic. When we meet a stranger we are usually able to see their faces in a general sense but we often struggle to pick them out in a group. I think what makes facial recognition so unique is that we use so many different parts of our brains in order to properly recognize someone.

Terminology: facial recognition, inversion effect, temporal lobe, neurons, superior temporal sulcus, fusiform gyrus, distinguishing characteristics

Face Recognition
https://faculty.washington.edu/chudler/java/faces.html
I used this sight to get a little information about the area of our brains that assists in facial recognition. I also used this sight to get a better understanding of how our brains struggle with recognizing faces that are upside down.


http://brainconnection.positscience.com/research-in-visual-perception-the-significance-of-face-recognition/
This source gave valuable information about areas of the brain activated during facial recognition and how our brains go about recognizing faces.

Have We Met Before? Patterns of Facial Recognition
http://www.youtube.com/watch?v=U6aeuwsP8VE
This video gave a short idea of the reasons that we struggle with recognizing an unfamiliar face and went through some research and testing that has been done to better understand why.

1a) State what your topic is.

I did my research this week on the neural activity of object identification.
1b) Discuss how the topic relates to the chapter.

The chapter is all about object identification, but they didn’t get into the neural mechanisms involved.
1c) Discuss why you are interested in it.
I am interested in neuroscience, so this is the neuroscience approach to this week’s chapter.
2)
In my brief research this week I learned about many different things relating to the neural workings of object identification, such as agnosia, the Jennifer Aniston neuron, a computational model of object identification, and some theories about what happens in the brain. Its been known that certain parts of the brain are responsible for the recognition of various stimuli. The fusiform face area (FFA) for example, is responsible for the brain recognizing faces, and the parahippocampal place area (PPA) is responsible for recognizing places. This week I read about a study where a neuroscientist tried to stop the activity of seizures in an epileptic patient by removing the area that was causing him problems. While doing so, he stimulated different areas of the brain to identify what specific section was responsible for the seizures. When he stimulated the fusiform gyrus, the patient claimed that his doctor “turned into somebody else.” Since the doctor stimulated this area responsible for the recognition of faces, the patient could no longer recognize people he was seeing, however his mental representations of people were not believed to be distorted. This is the case of people with visual agnosia. People with visual agnosia cannot recognize people that they see, but they have no problem recognizing their voices, so they may think their mother is an imposter when they see her but have no problem talking to her on the phone.

An interesting thing that I found is that although there is an area in the brain specific to faces, there is a particular neuron in the brain dedicated to Jennifer Aniston. The Jennifer Aniston neuron was accidentally found by researchers while doing brain surgeries on conscious patients. The neuron shows activity while looking at pictures of Jennifer Aniston, or even when just thinking about the actress. The really interesting finding was that this neuron was present in every patient they examined. There are also identifiable neurons for other famous faces such as Halle Berry and Kobe Bryant. Researchers can identify the action of the single neuron involved, but are interested in seeing the activity of the neurons in the surrounding neural neighborhood, as the inputs from these other neurons would be helpful in understanding how the brain identifies things and even stores memories.

In the first chapter of our text, it was noted that computer science is helpful in understanding cognitive psychology, because on some level the brain can be thought of as a computer, and understanding computer functions may help us understand brain functions and vice versa. I read an article about a computer model that simulates neural processes in object recognition. They talked about the difficulties a computer faces that seem to be so easy to us, like interpreting subtle changes in illumination, pose, and other variations, like something obscuring the full view. Initially, the computer only mimicked the brain’s immediate object recognition, but they are now including feedback loops similar to those in higher cognitive centers. This simulated cognition allows for context, so if the computer sees a horse it assumes that it is more likely on the ground than in the sky. The article talked about creating representations for objects for the computer to identify them, and I believe they are talking about a type of eigenface for everything. They also talked about how the computer could ‘learn’ based on their correct identifications. In this learning process, it’s possible that the memories involved in consolidating the information could simulate the Jennifer Aniston neuron, as the computer may save information about the actress in a specific part of it’s memory. Researchers are working hard to construct a complete brain map, and although it’s years away, the hope of it is incredible, and the implications would help our understanding of how the brain works exponentially.

http://web.mit.edu/newsoffice/2007/surveillance.html
This link contained the information about the computer’s ability for object recognition.
http://www.npr.org/blogs/krulwich/2012/03/30/149685880/neuroscientists-battle-furiously-over-jennifer-aniston
This link contained the information about the Jennifer aniston neuron.
http://www.huffingtonpost.com/2012/10/24/facial-recognition-brain-fusiform-gyrus_n_2010192.html
This link talked about a case study involving brain surgery and stimulation of the fusiform gyrus.

1. I chose to research more about the Gestalt theory. This theory is a top down processing theory that explains what we perceive from incoming stimuli and how that information allows for object recognition. I chose the Gestalt theory as my topic because I am fascinated about the number of different principles that were described in the book that allow for us to recognize things in different ways. I wanted to learn more about these processes and if there were more of them. It is amazing what our brains are capable of doing that allows for us to perceive the world.

2. When the Gestalt theory first came about, it went against the major psychological theory of the time which was behaviorism. The Gestalt theory took a cognitive approach to psychology and focused on perceiving the whole and focusing on the whole rather than focusing on elements or parts like behaviorism. This theory of psychology used biotic experimentation which was much different than the classic experiments done in lab settings at this time. This type of experimentation was done in natural settings and developed under real conditions yet was still able to be reproduced.

The Gestalt theory was founded by a man named Max Wertheimer and began with an observation he made while on a train ride. He noticed that it seemed as though a one light was jumping from one pole to another because they were flashing at the same speed. He realized that our perceptions are at times different then the sum of the sensory stimuli that are brought in. This led him to question the reality of all perceptions from sensory stimuli as well as to question what other ways our minds create a perception that is not truly what is there. The theory looks to describe how our minds organize incoming sensory information and how the laws of organization influence our perception. Wertheimer used the reification in his theory which explains that our perception shows more explicit spatial information than the sensory stimulus that is taken in. This process is explained by illusionary contours that our mind creates. As discussed in the book, the main principle in this theory is known as the law of prägnanz, also known as the good gestalt law. This law claims that we organize our experiences and stimuli in a way that is simple, orderly, familiar, and symmetric. This theory uses the process of emergence which states that complex patterns are formed from simples rules. The main principles of this theory explain how our minds organize information in a way that follows this over encompassing law. A few of the principles were discussed in the book including proximity, symmetry, closure, past experience, continuity, and common fate. The websites that I used to continue research added on to a few of these principles as well as informed me a more that exist within the theory. The book explains the law of continuity as our minds continue patterns even after they physically stop. This law also involves our minds grouping together objects that are aligned with one another. A few of the principles mix in together and seem to cover the same context such as the law of proximity and the law of continuity, but there are small but important differences that make them important to separate and specify. The law of similarity also pairs well with perspective principle. The law of similarity states that our minds group together things that bring in similar stimuli. Another principle that I learned additional information on was the closure principle. Added to this principle is the idea of camouflage. This states that objects are hidden in perception by being broken up internally causing the closure principle to attempt to group its parts with the surround environment parts in attempts to create order and closure of the conflicting objects. The last principle that was described in the websites was the principle of multistability. This law states that ambiguous stimuli and perceptions tend to go back and forth between alternative interpretations of the same stimuli because our brains seek order and understanding. Many of these perceptions allow for invariance of perception to occur. This means that simple objects are able to be recognized even if aspects are changed such as rotation of the object, different lighting, different scales, and so on.

http://en.wikipedia.org/wiki/Gestalt_psychology
This website gave a good base to what all is encompassed in the Gestalt Theory. It added features to those that were stated in the book.

http://www.scholarpedia.org/article/Gestalt_principles
This website went into far more detail and added on a few more principles than the first website and the book. It also had a lot of good visuals that allowed for a better understanding of each principle.

http://fac.hsu.edu/ahmada/3%20Courses/2%20Learning/Learning%20Notes/10%20Gestalt%20Theory.pdf
This powerpoint gave the history of the founder of the Gestalt theory and how the theory was derived. It also explained the basic principles of the theory.

1a) For this weeks topical blog I wanted to do a little bit more research on face recognition and how it is used in the real world today.

1b) Face recognition was briefly brought up in the chapter on page 128 in one of the blue boxes. The book touched on how good humans are at remembering hundreds of different faces even though it is a very tough cognitive thing to do. It also mentioned how we are able to do this, in part, by the specialized cells located in the inferotemporal cortex. Next it talked about how computers have been designed to recognize faces by reducing facial images into pixel values and then computing these into Eigenfaces using factor analysis, this information is then stored in a computer’s memory along with information on the person. In a matter of seconds, cameras in public places, can process pictures of your face and identify it as being you.

1c) The book mentions how casinos and other public gathering areas have been using this new technology for face recognition, but I wanted to learn about other places and there reason for using this new technology. This topic is interesting because I can see there being somewhat of a controversy on the topic. In a way it seems like it could be an invasion of people’s privacy, but at the same time it is a good way to protect people and locate criminal suspects.

2) A facial recognition system is a computer application that automatically identifies/verifies a person's face from a digital image or video frame captured by a video source by making comparisons. Typically these systems are used in security and the facial recognition can be compared to other things like fingerprints or eye iris recognition. The technique these systems use is very intricate and involves the use of many different algorithms which identify facial features by picking out identifiable landmarks or features from a persons face. They often analyze the relative position, size, and shape of eyes, nose, cheekbones, and jaw. When they enter these features into their database they are matched with faces of similar features. Recognizing features takes a geometric algorithmic approach, whereas photometrics uses statistics to produce values and eliminate variances. The newest type of facial recognition is 3D and is equipt wiht many sophisticated sensors. This type is said to achieve improved accuracies since it is able to identify the face from a range of angles and because it is not affected by changes in lighting. At the same time though, no one can be sure this technique is 100% accurate because it still struggles identifying faces with drastic expressions.

There are many advantages and disadvantages to using facial recognition. The main advantage is that it can identify individuals among a crowd, without them being aware of the system. Like I said above, however it does have weaknesses too. Although it can detect with some angles it isn’t quite on point when a person is standing at profile view. Also it has troubles detecting faces in different circumstances like poor lighting, sunglasses, long hair, and low resolution images. Also some more disadvantages are that it creates an issue with citizens expressing concerns about their privacy being taken away which in unlawful to their rights as citizens. Facial recognition can be used to identify an individual and also uncover a lot of personal data associated with them (blog posts, social networking profiles, Internet behavior, travel patterns etc.). Facebook is what creates the most uproar because people have so many pictures of themselves on which are labeled with their names so this could potentially be used by the government in syncing facial recognition photographs along with your name.
Facial recognition systems are being used in a variety of different places. One that has been in the news most recently is at the Winter Olympics in Sochi. These systems have been used at the entry point of airports to protect athletes and world leaders since there has been so many threats by terrorist attacks. This system has been keeping watch on all of the people working at the airport and the people passing through. The system they are using there, has been said to be so accurate, that it could distinguish between identical twins. Scientists show no doubt that one day in the future this system will be used in every airport there is. Which although may be an invasion to our privacy, it will speed up the flight process by a lot. They are also thinking about replacing passports with electronic documents that include our fingerprints, facial recognition, and iris scans. One thing that experts say on this subject is that the use in airports may be a little tricky because it could provide a lot of false-positives and innocent people face the risk of being wrongly accused with no easy way to appeal.
There are many other common ways that this system has been used that we may not even think about: facebook auto tagging us in pictures, digital cameras have face recognition and when someones eyes are closed it takes another picture, google have a facial search engine, smart phones having apps where you can only unlock your phone via face recognition etc. A few of the more outrageous cases I heard it being used in were: online dating website called find your facemate.com which matches people based primarily on facial compatibility;doggleganger.com which is a pet adoption site that matches potential dog owners with pets that look like them; using it on chimps in the wild to make observational studies easier when trying to trace a specific chimp; there is an app that recognizes leaves and can tell you what kind of tree it is from; last, there is a MORIS system that slips over an iPhone and police have been using to take fingerprints, retinal scans, and facial recognition analysis of people’s ID’s.

3)

http://www.mercurynews.com/business/ci_25108220/sochi-airport-uses-silicon-valley-facial-recognition-software
This website provided a lot of relevant information on how facial recognition is being used at airports in Russia to prevent terrorist attacks at the Sochi Olympics. It also gives detailed information on 3-D facial recognition, limitations, other uses, and the privacy issue.

http://en.wikipedia.org/wiki/Facial_recognition_system
This website gives a good in depth summary of facial recognition and its counterparts: history, techniques, softward, natable users, advantages and disadvantages, and it also provides information again on the privacy issue.

http://www.popularmechanics.com/technology/how-to/software/8-weird-ways-people-are-using-facial-recognition-software#slide-1
This website provides relevant information on facial recognition and some of the different and unexpected ways it is being used today.

This week I chose to look into eye movements further and stumbled upon visual receptive fields. I went looking into eye movement because I didn’t really understand what the book was talking about when they mentioned it, and I found myself very interested in the idea of visual receptive fields. I did research, and eventually settled on them because they were very complex and I wanted to know more.
What I learned is that for vision there are two different types of receptive fields (RF). Both are center-surround (CS) but one type is the center-on surround off (C-on) and the other is center-off surround on (C-off). Each neuron has one single RF that responds to a stimuli. For example sake I’m only going to reference C-on RF fields in the rest of the post, but keep in mind that the C-off RF works in the same way but opposite.
As background, I had to look into the basic eye functioning, and how light enters the eye. Light enters through the pupil and is focused mostly (about 80%) by the cornea. Next the iris adjusts depending on how much light is present, if there is a lot of light the iris will contract allowing less light into the pupil and vice versa for less light. Then the light hits the lens and it bends to focus the rest of the light onto the retina or back of the eye. After that, the light hits the receptors and is changed into a chemical stimulus that then travels through the many cells into the eye and out the optic nerve into the brain. Each neuron within the optic nerve has its own receptive field (there are millions within each eye), from which it receives stimuli. In order to find the CSRF of one of these neurons you must record from the axon of that single neuron and present a stimulus. The way that these experiments are usually done is with a cat or a monkey that has been trained to not move their eyes, and sensors that monitor to be sure the eye is still. They then present a stimulus, like a bright light, until the neurons firing is more than spontaneous.
Now to talk a little about neuron firing rate before we continue. A neurons firing rate is synonymous with the number of action potentials that it sends in a given time frame, usually a second. The firing rate encodes, or tells the brain, how intense a stimulus is. In this case the brightness would make the neuron fire more or less, so to control for that the experimenters use a light source of a constant intensity or brightness. It is also important to note that RFs are not the same size throughout the eye. They are smaller at the fovea, or center of the eye, and larger toward the periphery of the eye, so they overlap. That is why it is so crucial to record from just one neuron’s axon to fully understand the CSRF structure.
Moving forward, to understand how a CSRF reacts to a stimulus you have to picture a smaller circle (and since we’re focusing on C-on fields, the center is excitatory, or reacts more to a stimulus), and a larger ring around that (that is inhibitory or responds less to a stimulus). All neurons have a spontaneous firing rate, which refers to the number of times that a neuron fires even when there is no stimulus. So, when you present a stimulus the center of a CSRF, the firing rate increases to much more than spontaneous, because the center is only excitatory. Now, if you expand that stimulus, assuming it is circular, to encompass the whole RF (remember were only talking about one neuron for vision) then the firing rate will decrease back to nearly spontaneous. It only decreases to nearly spontaneous because the excitatory response is slightly stronger than the inhibitory. Now if you were to take a doughnut shaped light (a circular light with the middle cut out) and shine it at the CSRF the firing rate will be almost nothing, far less than spontaneous because now you are only getting inhibitory information from the neuron. There are of course more complex things that happen when you shine some light on some of each of both the center and the surround, but I won’t go there in this post.

http://www.sumanasinc.com/webcontent/animations/content/receptivefields.html
This link led me to originally research SCRF and gave me much of the general information on them.

http://en.wikipedia.org/wiki/Receptive_field
This page gave me the majority of both the background information and the detailed information in this post. A piece of the information also came from my sensation and perception class.

http://www.youtube.com/watch?v=KE952yueVLA
This video illustrates what I describe in this post, and is an actual experiment that they performed at Harvard to better understand CSRF.

I was interested in art and object recognition. This topic relates to chapter four because chapter four was all about object recognition and the interaction that takes place between sensation, memory, and identification. I am interested in this topic because it’s very interesting how artists were the precursor to psychological research about perception, object recognition, and manipulating our visual systems.

Throughout history, artists have been interested in the visual system and how to manipulate it. Artists have been especially interested in how to use ambiguous images to hold the attention of their audiences. In fact, many artists throughout history have sought to confuse our object recognition systems with the creation of ambiguous images in paintings, drawings, sculptures, etc. The paintings produced by J.M.W. Turner are so ambiguous that art historians assigned his paintings several different names over the course of history because no one could figure out what the paintings depicted. One of Turner’s paintings is clearly the interior of a room but the items in the foreground are so ambiguous that art historians have argued for years about what the objects might be.

Artists and scientists are now teaming up everywhere to uncover more about the visual system. Artists succeeded in captivating audiences with images that are suggestive of a known object but lead to only to further puzzles upon visual inspection. One such artist has worked with several scientists to try to tap into the neurological experience of his viewers by using fMRI scans. Despite no recognizable forms in the artist’s paintings, participants reported seeing a familiar object 36% of the time. Even when visual stimuli do not contain an actual object, our visual system automatically tries to process the input into known objects.

Some scientists have even suggested that looking at abstract art is good for our brains. It has been suggested that looking at abstract art pushes our visual system to its limits. This helps keep neurons healthy and functioning through repeated use. One theory suggests that we enjoy abstract art because it keeps our brains healthy and we have evolved so that it activates the reward center of our brains.

http://www.sciencedaily.com/releases/2008/11/081117082246.htm This was an interesting article about why we enjoy art and how it might relate to the health of our brains.

http://www.youtube.com/watch?v=7SMU5n6WTYA This video depicts how artists and scientists are working together to learn more about the visual system.

http://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=3&ved=0CDUQFjAC&url=http%3A%2F%2Fwww.robertpepperell.com%2Fpapers%2FSPIE%2520paper%2520final%2520published%2520small.pdf&ei=WK37UtTYL6rQ2wW714G4Cg&usg=AFQjCNHjDeAixDdGnYQl1QyXX4sxQppmXA This article discussed the history of artists in the scientific understanding our visual systems and how artists have manipulated our visual systems.

This week for my topical blog I wanted to talk about Gestalt theory. In the past I usually would do my topical blog on an important person within the chapter, but once again found my self not reading about someone that was interesting to talk about. So this week I was interested in the Gestalt theory dealing with facial recognition and more importantly the concepts of symmetry, common fate, and continuity. While I was reading I was found the information interesting to read about because like a lot of the information in this textbook I experience everyday. Also while I was reading this chapter I found it easy to relate some of the information back to a developmental course that I have taken here at UNI. There was not a lot of reference to Gestalt theory, but more towards depth perception. All around I enjoyed this chapter, and the information that was presented. In the beginning of my research I tried to find information that gave me more knowledge about symmetry, common fate, and continuity. I knew that this might not be easy to do, because the topic is pretty specialized.

In the first article I researched I got to read more about the three topics. There was some examples that made it easier to learn about, and helped me in understanding the area. Similarity means there is a tendency to see groups which have the same characteristics. Common fate was a topic that I did not understand while I was reading the chapter, so I was curious to see if the article had some good information that would help me to understand. The article said that continuity happens when the principles on proximity, and similarity are in place. If you had a few groups of black dots and they were close together it would be hard to keep those two groups separate because your eyes would always want them to be apart of the same group. The rule of continuity was easy to understand because the book did a good job with providing examples that made sense. The article did another good job in helping me understand the rule of continuity with even more great examples. Imagine that there are four different lines that intersect each other. It is hard for the brain to interpret this kind of information, so it will take those four lines and turn them into just two bigger lines that intersect each other instead of four. This concept is hard to explain in a blog, but makes total sense in my head! In all, I thought that this article did a good job in refreshing my memory on all of the topics, but I still need to know more about all of the topics in order to have a better understanding of the topics.

I wanted to learn more about the gestalt theory in general. I did not really read into the theory when reading the chapter, so I just wanted to do a little more research. The article that I looked at gave me a better understanding of the topic, and then further talked about the grouping principles that I talked about in the first paragraph. What the article talked about was that gestalt theory focuses on the holistic view. This means that our perception focuses on the whole is greater than the individual parts. This is the opposite ideals of the feature analysis that is also talked about in the chapter. The feature analysis does hold some credibility. Feature analysis states that we see things in the individual sense before we see them in the whole. This made more sense to me than the Gestalt theory because I could relate to the examples that the book had give. I do not want to get to far off topic because this blog has to do with the Gestalt part of the chapter, but I feel it is necessary to understand the other side of the argument in order to understand the other. The theory of Gestalt does make more sense to me when it has to do with the laws of grouping. The examples that are given from the book and the ones that I have seen while researching do a good job of helping me understand the material. I think that I sit in the middle of the fence with the two different theories, but hopefully with more research I will lean more to one side or the other.

The next article talked about some examples that were not touched much upon in the book. I wanted to learn more about the other laws of grouping such as proximity, and closure because they go hand and hand with the other laws that I have talked about. The law of closure is similar kind of easy to understand. The example that the article talked about was a circle that is not completely finished so that there is a gap. What the brain will do is close that circle for you. The one law that I enjoyed more was the theory of proximity. I remembered this theory because one of my good friends had taken this class and had set up an experiment for me. He came up to me and had a series of dots. He told me to circle the dots into groups. Since the dots are so close together what the brain will do is to make those dots into columns instead of making them single units. This makes sense when talking about the Gestalt theory because we are looking at the whole rather than the sum of its parts. The definition or concept of proximity states that elements tend to be grouped together depending on their closeness. The article then tried to relate this topic to the real world by saying that one should be careful when making web based designs because you would not want a consumer to be confused. This can happen if you have items that are to close together, but ultimately all depends of the perception of the viewer. In all, I thought that the research that I did was useful in helping me understand the Gestalt theory and the laws of grouping. The information that I found built off of what the book had to say and then helped to further explain the topic to me.

http://www.users.totalise.co.uk/~kbroom/Lectures/gestalt.htm

This article was helpful in refreshing me in the three topics of common fate, continuity, and symmetry.

http://en.wikipedia.org/wiki/Gestalt_psychology

This article was talked about Gestalt theory. Since the laws of grouping come from the Gestalt theory, I now have a better understanding of the topic.

http://www.etc.edu.cn/eet/articles/visualperc1/start.htm

I wanted to learn a little more about the other laws of grouping, and this article did a good job of explaining proximity, and closure.

This week I decided to look at facial recognition software. This was talked about a little bit in the book, but I wanted to learn more about it. I am interested in this because I think it is interesting when people try to get computers to do the deep processing that the human brain does.

Each face has different landmarks, about eighty of them, that make it unique. This may be the amount of space between your eyes, the length of your nose, etc. Each person's face is different from anyone else's. These points are translated into a numerical code, called a faceprint that can be used to identify someone.

Facial recognition technology used to be based off of 2D images, but recent 3D technology has allowed for 3 dimensional images to be used.

The first step in facial recognition is detection. This is where an image is scanned to make a 2D representation or video footage is used to create a 3D representation. After a face has been detected from the scanning, the system determines the head's position, size, and pose. The curves of the face are then measured and put into a template. The template is then translated into a code, where each set of numbers represents a facial feature. If the original image is in a different dimension (2D or 3D) than the footage that system will be detecting than an algorithm is used to translate the image. In the final step, the computer image is matched to another image from a database in order to verify the subject and recognize the face.

Retail stores were one of the first groups to use this technology, and now Facebook has picked it up as well. Facebook can now suggest people to tag in your photos based on other photos of them. Government agencies and airports are also using this technology to track criminals. Facial recognition software is now being marketed to consumers. There are some questions, however, as to whether all of this violates a person's civil liberties.

There are weaknesses in current facial recognition software. The closer the image gets to being the profile of a face, the less reliable it becomes. Poor lighting and items obstructing a face, such as masks, sunglasses, and even hair, can also impact the effectiveness of facial recognition. Different programs also vary in their effectiveness.

http://www.nytimes.com/2014/02/02/technology/when-no-one-is-just-a-face-in-the-crowd.html?_r=0

This article talks about the future implications and current issues involved with facial recognition software.

http://en.wikipedia.org/wiki/Facial_recognition_system

This website talks about the uses of facial recognition as well as the weaknesses of it.

http://electronics.howstuffworks.com/gadgets/high-tech-gadgets/facial-recognition2.htm

This article explains how facial recognition software works.

1.
a. This week my topic is on common fate. This is a Gestalt theory principle. It is one of the six principles that there are, but I found the common fate principle the most interesting of all the principles.

b. Common fate relates to the chapter because common fate is technically part of the chapter, all things are grouped together when they have things in common. The chapters are organized by content needed to be learned at the same time.

c. I think it is interesting to see how things are grouped together in the world. That way the world can be seen in different ways that also have diverse groups. Groups are all around us we just don’t always see them. So there are things about groups that we don’t even realize put us in groups that we are in.
2. The common fate principle groups similar things together. Some groups are easy to figure out like when you see a group of squares are in the Hermann grid illusion, all those squares are in a group. They all share similarities that glue them into the groups you see things in.

Some groups are more diverse though, say you are in the Rialto here at UNI. Your first group is the ethnic group that you are in. The second group is that you are a UNI student. Then there is the male or female group that you fall into. Then there are the groups that are living on and off campus here at UNI. Then you have to go into all the majors and minors that are in the world of UNI. You fall into many groups every day; that you may not even realize that you fall into because there are so many groups to fall into because there are so many groups to fall into, there are so many groups that are seen every day.

Groups are sorted more and more as you want to get more and more complicated. Some groups are simple though. For example you see a group of shapes, half of them are moving up and half of them are moving to the left. Now these shapes may be the same in contour, color, size, but because of their movements they are in different groups. So you see our groups are not always seen to us but they are always there. The common fate principle is always around us in this world.

3. http://www.youtube.com/watch?v=sg_hQRrbi1M --- This is a cool video that helps you learn about the rules made by Gestalt.

http://www.scholarpedia.org/article/Gestalt_principles#Common_fate_principle --- Thos is a nice cite that tells you about the ideas of Gestalt

http://www.adorama.com/alc/0013706/article/6-Principles-of-Gestalt-Psychology-That-Can-Improve-Your-Photography ---- This is another cite that helped me get some ideas on the common fate

http://en.wikipedia.org/wiki/Gestalt_psychology#Gestalt_laws_of_grouping ---This helped me with what I needed to learn about the common fate.

1) My topic is face recognition. It was briefly talked about in a small box, and I am interested in learning more about it, because it talked about both human and computer face recognition, and with technology growing we can do some crazy things. According to the text, humans already are good at remembering “hundreds if not thousands of faces.” I want to know what it all can be used for and how it can be beneficial in today’s world. The first thing that pops in my head when thinking about facial recognition is on the crime television shows that I watch where they are running faces that security cameras have picked up through their criminal database on their computers.
2) There are facial recognition systems in technology today. How this is done is by comparing selected facial features with an image of a person’s face or from a facial database. These features can be matched by checking the size and shape of a person’s: eyes, nose, cheekbones, and jaw.
A newer system that has come about is a 3 dimensional recognition system. This system uses sensors of the face 3D which allows it to track the shape of the face as well. It also can detect facial features from different angles rather than a face forward shot or a profile view. With this system, there does not need to be an actual direct contact with the person like there would need to be with finger printing or signature. One of the downsides is, it is more expensive than using locks, identity cards, and passwords for security purposes.
There are different uses for facial recognition systems. They are used in security systems, sometimes at big events they are used to look into people who may be potential criminals or terrorists at the event. According to the Wikipedia site, it was used at the Super Bowl in 2001, and there were 19 people who were identified there with a minor criminal background. Apparently the Mexican government has also used it to prevent voter fraud in their presidential elections. What they found was people were registering under several different names when they were voting; duplicate faces were detected from incoming voters who had previously voted under a different name. There are also many different potential uses that have been looked into for using this, such as, security usage at ATM’s and to unlock software and a person’s mobile devices. I have noticed that Facebook has a facial recognition system when pictures are uploaded and you go to tag a person, most of the time it will pop up with the right person’s name. Technology seems to be growing so fast.
Other ways I found that this system is used besides in crime situations is, to help problem gamblers at casinos. Ontario Lottery and Gaming Cooperation has installed this new technology on their slots machines. This records who their regular gamblers are and who may help with a gambling addiction that has been developed. Shockingly there was one hotel who actually bought one so that they could recognize their hotel guest when going to greet them when they came in the building. The next one seems a little odd to me, but according to CBN news, it is also used on a dating website to help find your soul mate, apparently people tend to be attracted to people who have similar facial features. This made me think about if I have any similarities with my significant other, and not that I can visually see, I thought this was a very interesting one. A community college in the UK uses facial recognition to take attendance of their students. By doing so I feel that the professors wouldn’t get to know their students as well as they do in other schools, because when taking attendance they are not physically doing it themselves. I wonder if they know the names of the students who attend their classes, like so many professors here at UNI do. I just feel like this is really impersonal. But the article told that the students and teachers seem to like how it was working so far. Another use that has come about for those who are underage and have attempted to buy alcohol from stores, there is a chain of stores that is now using this system to recognize those underage who have attempted to buy alcohol under the age in the past.
Overall there are some great uses for facial recognition, and there are some odd ones, like the dating website, and to take class attendance, there still needs to be improvement on this new technology, but technology grows so fast it seems in today’s world, where some of the flaws can be fixed. When I first thought of the facial recognition technology, the first thing that came to mind was how it is used in criminal cases; I did not realize that there are actually quite a few uses out there that it is used for.
http://en.wikipedia.org/wiki/Facial_recognition_system
I chose this website, because it told how face recognition works, as well as where these systems are actually used.
http://wiki.answers.com/Q/What_are_the_advantages_and_disadvantages_of_face_recognition_system?#slide=13
I used this website, because it talked about the advantages and disadvantages of using the facial recognition system.
http://www.cbsnews.com/pictures/7-surprising-ways-facial-recognition-is-used/
I chose this website, because it told different ways that this software is used.

1a) State what your topic is.
The topic I chose to do more research on is Gestalt psychology.
1b) Discuss how the topic relates to the chapter.
This chapter was all about how we classify visual stimuli. Gestalt psychology is about how we experience things that are not part of our simple sensations.
1c) Discuss why you are interested in it.
This was discussed briefly in the chapter and I would like to learn more about what it is and how it relates to the chapter.
2) Next, we would like you to take the information you read or viewed related to your topic, integrate/synthesize it, and then write about the topic in a knowledgeable manner.
Gestalt Theory is based on the observation that we experience things that are not part of our simple sensations. The original notion of Gestalt psychology was Max Wertheimer’s. He noted that we perceive motion where there is nothing more than a rapid sequence of individual sensory events. Wertheimer explains that we see an effect of the whole event, not contained in the sum of the parts. Wertheimer did an experiment with a string of lights that are going off one at a time really fast (Christmas lights). He explains that even though only one light flashes at a time, we see a coursing string of lights because the whole event contains relationships among the individual’s lights that we experience as well.
Gestalt theorists were the first group of psychologists to study perceptual organization. Gestalt means parts that are identified individually have different characteristics to the whole. For example, when describing a tree, the parts of a tree are the trunk, branches, leaves, etc. However, when you look at an entire tree, you are not conscious of the parts, you are only aware of the overall object. The parts of the object are not as importance even though they can clearly be seen.
With the Gestalt theory, you can talk about the Gestalt effect. I have talked about it a little with the lights and the tree example but there is more to it. The Gestalt effect is the form-generating capability of our senses, particularly with respect to the visual recognition of figures and whole instead of just a collection of simple lines and curves. In psychology, Gestaltism is often opposed to structuralism, which says that elements of human culture must be understood in terms of their relationship to a larger structure. The phrase “the whole is greater than the sum of the parts” is fitting when describing Gestalt psychology.

http://webspace.ship.edu/cgboer/gestalt.html
This source was great with describing what Gestalt psychology is and who Max Wertheimer is.

http://www.users.totalise.co.uk/~kbroom/Lectures/gestalt.htm
This source was useful because it gave me an example of Gestalt psychology (the tree example).

http://www.princeton.edu/~achaney/tmve/wiki100k/docs/Gestalt_psychology.html
The source was helpful because it didn’t just give me information on Gestalt psychology, but it also gave me information on the Gestalt effect and Gestaltism.

The topic I am going to be researching more on is pseudomemory or better known as false memories. In the chapter we had to read for our assignment there was a small section that talked about pseudomemory. The book did not go into much detail dealing with pseudomemory, but I find this area of memory to be really fascinating. The reason I find it fascinating is because when I had taken psy law in the past as a class we discussed about pseudomemory, and how it can screw up a person's life because someone remembered something about a crime even if it did not happen.

Pseudomemories are memories that we may believe them to be true, but they did not actually happen. There is not just one type of pseudomemories there are different types for different situations. The reason for pseudomemories is because our memory works by taking bits and pieces of experience, which may include several different places, and bringing it all together into what we think is a recollection, but is actually a collection of different memories. When we have to recall this collection of memories over and over it becomes unwittingly placed into our memories as being true. In a brain imagining study done in 2010, the neural patters were similar for true and false memories. Even our brain doesn’t classify our true and false memories differently!

One may think that pseudomemories are something they could never experience, but experts say that almost 50% of people, when put in memory recall situations, can be made to believe they remember something that never happened. Over the course of 200 experiments with 20,000 participants, time after time the research discovered that people would recall things that were never in the simulations. Suggestions can be a very powerful form of persuasion on our memories, as even if you have a clear memory, and the misinformation can make you doubt and or change the initial memory you had.

In the 1990s, the idea of false childhood memories became fairly popular. Adults and children, after seeing a therapist, would suddenly accuse family members, friends, or other individuals close to them of sexual abuse. This practice, of repressed memory therapy, was a popular form of psychotherapy. This type of therapy may include hypnosis, guided imagery, as well as sedative hypnotic drugs. As was mentioned earlier, the power of suggestion is extremely powerful, therefore, many of the horrible things recollected during therapy never happened at all.

Elizabeth Loftus is a leading researcher in the field of false memories, and she conducted an experiment to see what the power of suggestion could produce in her participants. To begin, she had her participants try to remember childhood events that were recollected by participant’s family or close friends. They then gave the participants three paragraphs on a piece of paper, each with two real memories, and one false one-in which as a child, the participant was lost in a shopping mall. Each false paragraph about the mall was the same for each participant. After they each read their paragraphs and then in follow up interviews, were asked details about these events. 30% of the participants remembered fully the false events immediately after and 25% remembered it 6 months later. This was just one study done illustrating that people can be persuaded into remembering something that never happened.

False memories are also seen in the criminal justice field, especially when it applies to eye witness testimony. In 2009, nearly 300 people had been exonerated of their crimes after DNA analyzing has become much more readily used. 75% of those cases involved an eyewitness that pinpointed the individual. The criminal lineup can be an issue, as most victims and/or witnesses believe that the person that committed the crime has to be in that lineup. Therefore, they are already looking for comparisons or trying to recall memories of what they saw, based on the faces before them. When the real perpetrator isn’t in the lineup, the individuals are looking for someone that is very similar, as well. Also, if the victim/witness is searching too long for the perpetrator, this also leads to more error, as recognition memory is a fast process. If given a photo lineup and then another lineup, they are highly likely to pick the person in the second lineup, believing that is the guy. Memories are already altered.

http://faculty.washington.edu/eloftus/Articles/sciam.htm
This link provided information on some of Elizabeth Loftus's research. Much of the information seemed to be fairly easy to understand, and was easy to read.

http://host.madison.com/news/local/crime_and_courts/memories-on-trial-parents-say-therapists-gave-daughter-false-memories/article_56549e30-0c89-11e0-a44f-001cc4c03286.html
This is a link to an article that discusses the issue of suppressed memories of child abuse. The article discusses specific cases in which parents were wrongly accused of horrible abuse.

http://www.cbsnews.com/news/eyewitness-how-accurate-is-visual-memory/
This video clip is about a man wrongfully accused for a crime. Ronald Cotton, a man accused of raping a woman and sent to prison for 11 years. This video gave the point of view of both Ronald and the woman that accused him.

I picked pseudomemory as my topic for this week. This deals with how people make up something that they believe is true as called false memory syndrome. In the first paragraph the said that “Solso and McCarthy (1981b) found that participants falsely recognized the prototype as a previously seen figure with greater confidence than they identified previously see figures.” I find this very interesting that people can be more confident about things that are completely made up. In the study from the book they had participants pick out faces from a set of three faces. Of the faces three were prototypes, which were from the faces of model people. They then had people pick out faces that were in the previous set of people. The rates of the prototypes as a previously seen were higher.
When looking for more information I came across recovered memory therapy. This is believed to create false memories and false memory syndrome. Information called memory consolidation becomes stored in the brain even if it is made up. People who try to find lost memories are more likely to have false memory. They brought up when studying a list of related words about candy that a person when asked to recall words were putting in words like sweet instead.
There was a study done on 133 children who attended a school which had a sniper shooting.They interviewed these children and some that were not even in class that day. Of the children that were not in class that day, the psychologists discovered that they had personal recollections of the attack happening. They believe the children created these false memories because they were exposed to the stories. Jean piaget was also brought up as creating a false memory. When he was little was a botched kidnapped that his nurse claimed she fended off the kidnapper. The nurses story never actually happened, but because he had heard it as a child he made a false memory and believed he remembers seeing his nurse being attacked.
In the interview with Elizabeth Loftus who is a false memory expert tells about her experiences in studying false memory. One of her first examples was of Mitt Romney. He believed he had attended an event that happened 9 months before he was born. As I stated before he was taking bits and pieces of other stories and putting them together to make his own. She also brings up the point that you cannot suppress a memory it is a false memory instead. Elizabeth said that you can’t keep a memory like that without thinking about it. After you suppress it for that long and not think about it. She believes you can’t go to therapy again and have it reappear.

http://en.wikipedia.org/wiki/False_memory_syndrome
This website gave me lots of examples and why false memory happens.

http://serendip.brynmawr.edu/bb/neuro/neuro03/web2/kflannery.html
This was a good website because it gave me plenty of instances in which false memory has occured.

http://www.slate.com/articles/health_and_science/new_scientist/2013/09/elizabeth_loftus_interview_false_memory_research_on_eyewitnesses_child_abuse.html
This is an interview with Elizabeth Loftus she gives good information on her studies of the subject.

I picked pseudomemory as my topic for this week. This deals with how people make up something that they believe is true as called false memory syndrome. In the first paragraph the said that “Solso and McCarthy (1981b) found that participants falsely recognized the prototype as a previously seen figure with greater confidence than they identified previously see figures.” I find this very interesting that people can be more confident about things that are completely made up. In the study from the book they had participants pick out faces from a set of three faces. Of the faces three were prototypes, which were from the faces of model people. They then had people pick out faces that were in the previous set of people. The rates of the prototypes as a previously seen were higher.
When looking for more information I came across recovered memory therapy. This is believed to create false memories and false memory syndrome. Information called memory consolidation becomes stored in the brain even if it is made up. People who try to find lost memories are more likely to have false memory. They brought up when studying a list of related words about candy that a person when asked to recall words were putting in words like sweet instead.
There was a study done on 133 children who attended a school which had a sniper shooting.They interviewed these children and some that were not even in class that day. Of the children that were not in class that day, the psychologists discovered that they had personal recollections of the attack happening. They believe the children created these false memories because they were exposed to the stories. Jean piaget was also brought up as creating a false memory. When he was little was a botched kidnapped that his nurse claimed she fended off the kidnapper. The nurses story never actually happened, but because he had heard it as a child he made a false memory and believed he remembers seeing his nurse being attacked.
In the interview with Elizabeth Loftus who is a false memory expert tells about her experiences in studying false memory. One of her first examples was of Mitt Romney. He believed he had attended an event that happened 9 months before he was born. As I stated before he was taking bits and pieces of other stories and putting them together to make his own. She also brings up the point that you cannot suppress a memory it is a false memory instead. Elizabeth said that you can’t keep a memory like that without thinking about it. After you suppress it for that long and not think about it. She believes you can’t go to therapy again and have it reappear.

http://en.wikipedia.org/wiki/False_memory_syndrome
This website gave me lots of examples and why false memory happens.

http://serendip.brynmawr.edu/bb/neuro/neuro03/web2/kflannery.html
This was a good website because it gave me plenty of instances in which false memory has occured.

http://www.slate.com/articles/health_and_science/new_scientist/2013/09/elizabeth_loftus_interview_false_memory_research_on_eyewitnesses_child_abuse.html
This is an interview with Elizabeth Loftus she gives good information on her studies of the subject.

The topic I chose to research this week was face recognition. I chose this topic because it has a very practical relation to everyday life. Whether it be mistaking someone for someone else that you know personally or picking the wrong person out of a criminal lineup, knowing how facial recognition works and how our memory of faces can be influenced and tainted is an important subject. This topic also relates to the chapter because it is brought up briefly when discussing template matching and it relates well to many of the theories described in the chapter.

Face recognition is an important skill for any person to have in their life and develops in its complexity over the early years of human development. A newborn infant is capable of mimicking facial expressions displayed by adults, which shows that they have the ability to identify changed in expression such as mouth and eye shape. At this age however they can't connect facial expressions with their associated emotional message, such as smiling indicating happiness. At roughly seven months old infants seem to make this connection and will focus more on a fearful face than a happy face when presented with the two options.

Facial recognition as an adult is how most studies seem to approach the topic. Many things can influence our perception of faces. Some things can influence our recall of faces in a positive way and others in a negative way. One of the positive factors influencing facial recognition are frequency of exposure, which increases recognition as the frequency increases. Another positive factor is whether or not a face is linked with an episodic memory. This is thought to be the case for many reasons, none of which are fully explained or understood at this time.

One of the factors that negatively influences recognition that I knew about before researching this topic is the cross-race effect. This phenomenon occurs when examining the face of another person or group of people that belong to a different race than yourself. The effect this has on your perception is an increased tendency to say that all faces belonging to people of a same race different from your own look the same or very similar. This is an important phenomenon to note especially during the process of witness identification. Another factor that can influence our perception of faces in a negative way is if the person perceiving a face has autism. This was especially interesting to read about as much of the information regarding how autistic individuals interpret faces relates well to the topics brought up in this chapter, such as the fact that they employ bottom-up processing.

There is also a condition known as prosopagnosia, which is also known as face blindness. This condition is a cognitive disorder that impairs facial recognition but has no effect on object recognition/discrimination or decision making. People with this cognitive disorder have been the subject of many studies on facial recognition and lesioning other participants without the disorder is also common among studies.

All in all, further research into the topic of face recognition has only made me more interested in the subject and the fact that there was too much information for me to write about is encouraging. I reviewed our textbook and noticed that this subject will be addressed again many times throughout the upcoming chapters and I look forward to it.

http://en.wikipedia.org/wiki/Face_perception
Interesting overview of the subject as a whole. This is where I found the factors that enhance and detract from recognition.
http://www.laymanpsych.com/facial-recognition-psychology/
This website talked about some of the experiments done on the subject, particularly ones involving lesioning.
http://en.wikipedia.org/wiki/Prosopagnosia
Defines and explains the causes of the disorder. I found this to be particularly interesting due to the fact that I could write another topical blog on it alone.
http://opl.apa.org/Experiments/About/AboutFacialRecognition.aspx
Lists some other factors influencing facial recognition and describes methods of studying the subject.

1a)--My topic is the role of pattern recognition and other cognitive aspects in the game of chess and the role this plays in an individual’s success in the game.
1b)--It relates to the chapter directly because the chapter even had a small section on the increased ability of expert chess players to recognize patterns compared to more novice players. For decades researchers have studied and attempted to link success in chess with certain mental abilities.
1c)--The topic interests me because I have always enjoyed the game of chess and played since I was young, but have never been all that good at the game. The way some people are such prodigies of the game (Bobby Fischer for example) and can play multiple games against skilled adults and defeat them all just blows my mind. What is it that separates some of these elite players from the grandmasters? It could very well be pattern recognition.

Bill Wall makes an interesting note in his article on chessmaniac.com that women represent fewer than 5% of all tournament chess players, and only 1% of all grandmasters. This is not to say women cannot be elite chess players, but in an experiment where women played against an unknown partner (male or female) they performed much better than they did when they thought they were playing against a male counterpart. Their “chess-specific self-esteem” is lowered when playing against men. The experiment also showed that while men tend to score equally well in tournaments and on individual tests of chess skill, women perform worse in tournaments compared to individual tests, likely another self-esteem issue. Wall listed the 10 most important things for a chess player to possess earlier in the article, and he rated self-confidence as #7, but from this data I would think this would be higher. But what other factors are at play besides gender?
Most cognitive psychologists who have conducted research on the difference between elite and amateur chess players agree the ability of the elite to quickly decipher patterns in the game is the key to their success. The popular notion that the best chess players think “many moves ahead” is not necessarily true. Research has shown that expert and beginner players differ very little in this area. However, when presented with an in-progress game, expert players can within seconds decipher what pieces are in danger and where the best available move is, whereas this can take amateur players 15 minutes or more and they still may not find the best move. This is because most chess players have such a large database of past games and experience that they are able to quickly draw on this previous knowledge and recognize where the strong moves are to be made (pattern recognition). Novice players do not have this database of games and must go through a more methodical piece-by-piece sequence to determine their best move. This is also why experts often perform better in high stakes, timed matches because they don’t need more than a few seconds to decipher the board and make a move.
But what does this increased pattern recognition and memory bode for expert players outside of the chess realm? In his book “Moonwalking with Einstein”, Joshua Foer describes most grandmaster chess players as having average cognitive skills and memory for all matters outside of the chess realm. This suggests that expertise in chess is likely more a result of passion, obsession, and hard-work, rather than superior analytical or cognitive skill. Foer notes that this shows the importance of context in memory. While they can recreate an actual game board easily from memory, expert players are no better than amateurs when trying to recreate a chess board of randomly selected pieces (the example used in the book by Chase and Simon). These random pieces have no context, no similar boards to compare it to in their mental database, no way to chunk it. Foer also notes that studies show that higher-rated chess players have more activity in the frontal and parietal cortices of the brain, which indicates they are recalling long-term memory information, whereas lower-ranked players show increased temporal lobe activity, indicating they are encoding brand new information.
So to sum up, it is not entirely clear whether gender makes one more predisposed to chess success, although women perform more poorly against men than other women. Also, a high ability in chess does not necessarily deem that person any smarter than average or of a higher cognitive level. Chess players are able to use their vast knowledge of and experience in the game to quickly determine the most opportune move. But this does not make them any quicker at other games or other aspects of cognitive functioning (except maybe checkers). All in all, expert chess players are experts in chess, and pretty much average most other ways.

http://www.youtube.com/watch?v=rWuJqCwfjjc
This video shows two-time US Chess Champion Patrick Wolff performing a chess position reconstruction task similar to the one used by Chase & Simon (1973) that is described in the book. Wolff describes his use of chunking the board into several areas based on where the most dominant pieces are to help him remember which piece is supposed to go where.
http://www.chessmaniac.com/index.php/2012/06/29/chess-and-cognitive-psychology/
This article gave me a lot of information synthesized from previous studies on the processing used by chess players during a game. It details the intricacies that separate skilled from novice players and also showed the disparity between male and female players.
http://www.openwriting.com/archives/2011/06/chess_grand_mas.php
The book excerpt showed the important of context in memory, that chess players can retain thousands of chess boards draw upon this former knowledge to help in a previous game. But this high cognitive functioning has no carry over to the real world.


Topical Blog Chapter 4
The topic from chapter 4 that I would like to do more research on is really more like a couple topics. I would like to look into the direct perspective and the constructive perspective. Both of these are different views on how we perceive things. Chapter 4 states that the direct perspective is all about what is innate inside of us. If someone thinks that they perceive things through the direct perspective, they think that when they see something, they automatically know what that object is. When they see a tree for the first time, they know that it’s a tree. And the constructive perspective is quite the opposite. The constructive perspective states that when a person perceives something, they understand what it is because they have experienced that object before. So when a person sees a tree, they know it’s a tree because they have heard about what trees are and what they look like. I think that this topic of the direct perspective versus the constructive perspective is interesting because it is much like the nature versus nurture issue. When people first started studying psychology, there was much debate on whether we knew things because we were taught them through different experiences or whether we were born with certain thoughts about things. I have always really liked the discussion about nature vs. nurture. This has been a long standing debate throughout the history of psychology. I think that it’s very interesting to learn about and I think that it’s very interesting to hear other people’s perspectives of it. In doing my research on these two topics, I want to look at the terms separately before I look at them as a pair.
The constructive view of perception looks at perception as something you can build on. When you go through certain experiences, you change and mold your thoughts and views to fit with those experiences. This view states that you are constantly using your environment to help you perceive things. Everyday things that you see around you are perceived in a certain way because of the experiences you’ve previously had throughout your life. There are many different kinds of the constructive view. The first two I found were from Bohlin et al. Bohlin and his colleagues explained the two as individual constructivism and social constructivism. Individual constructivism states that we construct how we perceive things through our own personal experiences rather than building them on those around us. And social constructivism says that we construct our views with the help of others. These are the first two branches of the constructive view. But then I also found three more different branches.
Two men named Harris and Graham came up with endogenous, exogenous, and dialectical constructivism. Endogenous constructivism is much like individual constructivism. It states that the construction of knowledge is bases on existing knowledge and comes from within. Exogenous constructivism is much like direct constructivism. Exogenous constructivism states that your new knowledge comes from experiences and environmental influences. And dialectical constructivism is much like social constructivism. It states that your new knowledge comes from your social interactions and your experiences with people around you. It seems to me that the second theory by Harris and Graham is just expanding on Bohlin’s theory. They came up with different names for the concepts and added a third that is identical to direct constructivism. It has become a bit unclear to me how any of these terms are different from one another. I think that they are all the same, but different psychologists are giving them different names. Maybe my research on the direct view won’t seem as if I’m reading the same definitions over again.
Direct perception is the theory that perception is a direct result of information from the surrounding environment. I have found that there are more arguments against direct perception than there are against constructive perception. People claim that direct perception cannot be the sole cause of what we perceive because it is too simple. On website I found, makes its case by discussing illusions. People sometimes perceive things wrong, or they perceive things that aren’t even there. This shows that there has to be more to perception than just information gained from one’s environment. Philosophers refer to this as the Argument of Illusion. The example that the article gives is about how someone perceives a plate. If someone were to hold out a plate horizontally, so you could only see the side, you would still state that the plate is round. Even though you cannot directly see the plate’s roundness, you still know that the plate is round because of past experience with plates. This is called the Argument of Illusion. People sometimes don’t see things the way they are, so there must be more factors affecting a person’s perception.
I did find one website that discussed a person’s opinion of direct perception. There are reasons that you can argue for direct perception. The concept of illusions are brought up and they are explained in a different manner. Yes, people see illusions. But there are reasons that we see them. The example that I found was when you look at something in water. If I see a fish swimming though the water, he will look distorted. It probably looks closer, bigger, and many other things. This is an illusion, but that doesn’t mean that I am not directly perceiving it. The reason that I see it this way is because of the properties of the water. I am directly perceiving those properties mixed with perceiving the fish. I think that this is a good argument. But hallucinations are also brought up. This is one argument that cannot be won for direct perception. There are people (ex: patients with schizophrenia) who see hallucinations. They may think that they see a person who isn’t there, or they think that they hear something that wasn’t heard by anyone else. There is no explanation for why these people see and sense these things the way that they do.
So in conclusion, I realized that it takes both direct and constructive perception to really perceive things for how they are. A person needs to use both of them in order to perceive things as the way they are. You need both experience, but you also are born with some innate knowledge. It really depends on the person or the psychologist to determine for themselves what they think. There are certain situations that might use one more than the other. And there also might be certain people that use one more than the other. In my opinion, I think we definitely use both. But I also think that the constructive view on perception is a lot more realistic and a lot more important when it comes to perception.

URLs:
http://principlesoflearning.wordpress.com/dissertation/chapter-3-literature-review-2/the-constructive-perspective/
I used this first website because it had a lot of good information on the constructive view of perception. It shows many different theories and many different branches of the constructive view.

http://socrates.berkeley.edu/~noe/directperception.pdf
I chose to use this article because it had a lot of good information on direct perception. I saw on a few websites that there were arguments against direct perception, but this one had more information about why people argued against it.

http://onphilosophy.wordpress.com/2006/06/17/in-defense-of-direct-realism/
The reason I used this website was because it had a couple good arguments that were for the direct perspective. There were many arguments I found that were against it, so it was interesting to read the arguments for it.

Terms: Constructive Perception, Direct Perception, Nature vs. Nurture, Illusions, Perception

1a. My topic is canonic perspective.
1b. Canonic perspective relates to the chapter because it is a way in which we view objects. This whole chapter focuses on object recognition and how we interpret visual information. This perspective sheds light on how we think about objects in the human mind.
1c. I find this topic interesting because of the visual example they showed in the book. Whenever something is visual it catches my attention a lot quicker, as did this example. Also the fact that all humans seem to view objects in their mind the same way is interesting in itself.
2a. Canonic perspective is a view that yields the most information for us. Most people seem to see objects the same way when conjuring an image of it in their mind as they did when physically viewing it. The minds view of objects is slightly elevated and to the side, almost as if we are physically seeing an object from our standing position. So instead of conjuring an image of a blender from a bird’s eye view we see it in our minds as if we are looking at it as it sits on a table from a front view. This suggests that we see things the way we experience them. This interesting fact was found out by Palmer, a researcher who went to many people of different cultures and backgrounds and asked them to draw a teacup on a dish. Interestingly almost everyone drew the exact same picture, and it was shown that they were all from what is now deemed the canonic perspective. Tar and Pinker’s explanation for this phenomena is that after repeated views of an object our brain encodes that view of the object and so every time we envision an object that view of it Is readily encoded. Further research done with camera angles also shows that pictures are more readily identified when they are captured from our canonic perspective. Also, it has been shown that it is not just viewing the object itself that sets up our perspective, but also the context in which we see the object. For instance, if the object is at ground level on the floor or far above us in a tree. We may be unable to recognize an ant, for instance, from a face level view, but will readily recognize it if it is shown from a bird’s eye view because that is how we typically see the ant.
3. http://courses.washington.edu/hypertxt/cgi-bin/book/pmontage/canonperspec.html
This website elaborates on the canoncic perspective and tells us that it is not just the image that sets up this perspective but also the context in which it is present.
http://www.citelighter.com/science/science/knowledgecards/the-canonical-perspective
This website introduces some newer research on this perspective, and also tries to explain why we view images from the canonic perspective.
http://www.blog.theteamw.com/2009/10/29/100-things-you-should-know-about-people-4-the-canonical-perspective/
This website reinforces all the information from both the book and the previous websites and put consensus on just what the canonic perspective consists of.

I chose to look at facial recognition. It is a really neat thing that every day we are constantly seeing people and faces but yet we can remember the ones that we know and ones that we don’t know. When you see a face your mind is going through a lot it’s a little bit of a complex thing. We notice and remember things that are moving and also standing still. Some of this is the same of recognition that is used in all objects, but with the face it is a special thing. From day one we are attracted to faces looking at them remembering them, but the odd thing is that even a face that we have known for our whole life we have trouble recognizing a face that is upside down. Our temporal lobe helps us to recognize faces. There are some neurons, located in the temporal lobe, that allow us to identify certain features of our faces. If the temporal lobe gets damaged, some people struggle with being able to recognize a normally familiar face. There are some people that look alike and it’s important that we don’t mix them up. Our brains are trained to look at faces carefully and those little differences. When we meet a stranger we are usually able to see their faces in a general sense but we often struggle to pick them out in a group. I think what makes facial recognition so unique is that we use so many different parts of our brains in order to properly recognize someone.

http://brainconnection.positscience.com/research-in-visual-perception-the-significance-of-face-recognition/

http://www.youtube.com/watch?v=U6aeuwsP8VE

https://faculty.washington.edu/chudler/java/faces.html

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