A very helpful study guide

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Published on 27 Jun 2011
School
UTSC
Department
Psychology
Course
PSYB51H3
PSYB51- Chapter 7 Perception
and Cognition
Motion Perception
Robert Addams has described motion aftereffect (MAE) the illusion of
motion of a stationary object that occurs after prolonged exposure to a moving
object.
After viewing motion in a constant direction for a sustained period of
time , we see stationary objects that we view subsequently as moving
in the opposite direction
MAE is caused by opponent processes for color vision
Apparent Motion
Apparent Motion The illusory impression of smooth motion resulting from
the rapid alteration of objects that appear in different locations in rapid
succession
The illusion was first demonstrated by Sigmund Exner in 1875
He set up a contraption that would generate electrical sparks
separated from each other by a very short distance in space and a very
short period of time.
Even through there were two different sparks- two different perceptual
objects- observers swore that they saw a single spark moving from one
position to the other
21st century, televisin, using computers are all examples of apparent
motion
The Correspondence and Aperture Problems
Aperture: An opening that allows only a partial view of the object
Correspondence Problem: The problem faced by the motion detection
system of knowing which feature in frame 2 corresponds to a particular
feature in frame 1
Aperture Problem: The fact that when a moving object is viewed through
an aperture , the direction of motion of a local feature or part of the object
may be ambiguous
Detection of Global Motion in Area MT
www.notesolution.com
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Document Summary

Aperture: an opening that allows only a partial view of the object. Correspondence problem: the problem faced by the motion detection system of knowing which feature in frame 2 corresponds to a particular feature in frame 1. Aperture problem: the fact that when a moving object is viewed through an aperture , the direction of motion of a local feature or part of the object may be ambiguous. Detection of global motion in area mt www. notesolution. com. Lesions to the magnocellular layers of lgn (lateral geniculate nucleus) impair the perfection of large, rapidly moving objects. Info from magnocellular neurons feed into v1 and is then passed on to the middle. I nterocular t ransfer: the transfer of an effect (such as adaption) from one eye to another: the mae in humans is caused by the same brain region responsible for global- motion detection in monkeys. Fi rst order- motion: the motion of an object defined by changes in the luminance.

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