9b-Perception-6

9b-Perception-6 - together to form a perception of the...

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1 Perception: part 2 Perception--Outline I. Psychophysics II. Perceptual Organization A. Gestalt Psychology B. 3-D Form and Depth Perception C. Perceptual Constancies III. Bottom-up and Top-down Processing Bottom-up and Top-down processing • 2 types of processing occurs in Perception and Recognition: Top-down and Bottom-up. • Recognition --involves comparison and matching of incoming info to info stored in memory. Bottom-up and Top-down processing Bottom-up Processes : Begin with local stimulus features & bring them together to form a perception of the whole. E.g., perception of a letter Top-down Processes : Processes that make use of knowledge to help perceive and recognize patterns. Stimulus Combine features to perceive patterns Detect Features Bottom-up Processing Bottom-up and Top-down processing Bottom-up Processes : Begin with local stimulus features & bring them
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Unformatted text preview: together to form a perception of the whole. E.g. , perception of a letter • Top-down Processes : Processes that make use of knowledge to help perceive and recognize patterns. 2 Examples of Top-down processing: Examples of Top-down processing: use knowledge to organize input Top-down Processing Top-down Processing What do you see? 3 Examples of Top-down processing: perceptual set -- what we see is influenced by what we expect to see. What do you see? Examples of Top-down processing: context effects a b c--Faster to identify object (fire hydrant) in (a) than in (b) or (c).--i.e., faster at identifying an object when it is in an appropriate context Examples of Top-down processing: context effects Summary: Perception involves the interplay between top-down and bottom-up processes. Top-down and Bottom-up Processing The End!...
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This note was uploaded on 04/27/2008 for the course PSYCH 201 taught by Professor Sereno during the Spring '07 term at Oregon.

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9b-Perception-6 - together to form a perception of the...

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