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Face Perception

The lesions associated with prospagnosia are found in the ventral occipitotemporal cortex and are usually bilateral(ref dam sergent) however there is evidence of cases of prosopagnosia associated with damage confined to the right hemisphere (Derenzi and Derenzi et al.) .
             In addition to the neuropsychological support evidence from normal subjects suggests that face perception is dissociated from object recognition. For example, beginnging shorly after birth infants prefer to gaze at faces (Morton and Johnson). Infnats will also pefer to track faces rahter than other moving patterns soon after birth (Morton J jo). The effect of face inversion has been cited as evidence that face percepyion is mediated by a specialised system. It is markedly more difficult to identfy an upside-down face. The detrimental effect of inversion is moe marked for faces than for non face stimuli (Cog Neuro & Haxby in reader). Prosopagnosiacs do not show performance impairment fro inverted faces suggesting that faces may be processed more like objects within these individuals. Haxby et al suggests that given this evidence the face percetion system is not engaged effectively by viewing inverted faces but such reasoning seems dubious. For example it may be postulated that inverted faces are no longer faces but rather abstract objects that need discerning on a part based system before actual face recognition can occur. The account of prospagnosiacs not showing the inversion effect can then be accounted for by arguing that face recognition operates in an holistic manner involving neural systems whcich are collectively activated when faces are veiwed upright. During veiwing of inverted faces the necessary stimuli for the holistic response is momentarily absent until the part based system necessary for object recognition discerns that the image is a face. This information is then transferred to the neural system that participates in holisyic face perception and I=s thus the image is peceived as an inverted face.


Essays Related to Face Perception

1. Perception

This process is called perception. ... Finally, we interpret the perception by looking at attributions. ... My perception of certain situations has changed completely from when I was a child to now, but other perceptions have not changed at all. ... Many times at the beginning of my relationship with my girlfriend, I thought something would be bothering her because she wasn't smiling or she had a scowl on her face. ... Another way to improving perception and communication is recognizing that perceptions are partial and subjective. ...

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2. Perception

A person without any perceptual ability would not be able to recognize faces, understand language, or avoid threats. ... Although most often applied to visual perception, the Gestalt laws also apply to perception in other senses. ... However, you may also see two dark faces that point toward one another. ... In the real world, vases do not change into faces as we look at them. ... To understand shape constancy, hold a book in front of your face so that you are looking directly at the cover. ...

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3. Perception

This happens all too often and is one of the flaws in human perception. So, in this way, the senses are able to influence perception. ... The power of suggestion is also an amazing influence on the senses and perception. ... Perception depends completely on the senses. ... Therefore, the senses are vital to the act of perception in all forms. ...

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4. Interpersnal Perception

"Perception Paper" Day in and day out people tend to form an interpersonal perception of others. ... They also had scars all over their faces. ... Every person in the bunch would look at anybody who would walk by them with a mean face and then say a bad word. ... This is known as direct perception checking. ... Before this paper I would have said that this whole perception paper is just a waste of time, but I now realize the importance of accurate perceptions through direct perception checking. ...

  • Word Count: 1472
  • Approx Pages: 6
  • Has Bibliography
  • Grade Level: High School

5. Perception Paper

An individual's perception of external stimuli is a perfect illustration of this fact. ... One particularly interesting phenomenon associated with the perception of brightness is that of simultaneous brightness contrast. ... Visual and auditory perception is much more correlated than one may think. ... This demonstration can also be done right in class with two other partners by doing the following: 1) have an observer face you and keep looking at your face. 2) have another person stand behind you so the observer can't see their face. 3) repeatedly mouth the word 'vase...

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6. Socioeconomics and Childhood Perceptions

However, the biggest substantial challenge children face in low-income communities are insufficient access to quality educations, lack of proper nutrition's, lack of access to quality jobs, and influential role models; these prominent factors can hinder their future development. ... As they arrive in the city, Flyboy is fascinated by the expense of a particular toy item that far exceed is perception regarding the cost of it. ... That being the case, there are substantial advantages and disadvantages in socioeconomic status that effects one's perception regarding society. ... Moreove...

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7. Comparison of American Slavery and Russian Serfdom

The system of labor underwent rapid expansion that modeled the increasing power of Russia, its perception of labor shortages, its need for tax revenue, and its military work force requirements. ... However, Russian serfs still faced mistreatment and protests continued, contributing to revolutions in 1905 and 1917. ... After the end of the Reconstruction period, Southern blacks witnessed violent intimidation and were faced with new racial laws, proving that the reform period in the United States remained incomplete. ... The Abolitionist and Emancipation movements were efforts to make the co...

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8. Societies Perception of Black Men

People's prejudices concern their perceptions of other individuals and their attitudes and behavior towards them. ... Racial prejudice against blacks by whites has been perhaps one of the more severe and social problems faced by the United States. ... In "Black Men and Public Spaces ", Brent Staples is in his early twenties and is faced with the crime of being a black man in the 1970's. ... It's disturbing to know that someone life can be lost due to the perception of another person, with no questions asked, but these questions come to my mind. ... And how can we change the nega...

  • Word Count: 1151
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