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PSYB57H3 (369)
Chapter 3

Chapter 3- Perceiving objects and recognizing patterns

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University of Toronto Scarborough
Gabriela Ilie

PSYB57- Chapter 3- Perceiving objects and recognizing patterns Perception- taking sensory input and interpreting it meaningfully Neuroscientists have estimated that the areas of our brain responsible for visual processing occupy up to half of the total cortex space The main problem with perception is explaining how we attach meaning to the sensory information we receive Perception can be divided into visual, auditory, olfactory, haptic, and gustatory perception Distal stimulus- an object, event or pattern as it exists in the world. For a living organism to process information about these stimuli, it must first receive the information through one or more sensory systems Proximal stimulus- the reception of information and its registration by a sense organ Retinal image- a proximal stimulus for vision, consisting of the projection of light waves reflected from stimuli and projected to a surface at the back of the eye. This image in 2-D and its size depends on you distance from the window and the objects beyond (the closer you are to the image the larger it is). the meaningful interpretation of the proximal stimulus is the percept percept is not the same as proximal stimulus Size constancy- the phenomenon that ones perception of an object remains constant even as the retinal image of the object changes size Perception involves something different from the formation of retinal images Related to perception is a process called pattern recognition- this is the recognition of a particular object, event, as belonging to a class of objects, events, etc. Because the formation of most percepts involves some classification and recognition, most instances of perception involve some pattern recognition Gestalt approaches to perception Form perception- the segregation of the whole display into objects (a.k.a. figure) and the background (a.k.a. the ground) www.notesolution.com
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