Week2_Review - Perception review of lecture 3 Feature...

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Unformatted text preview: Perception review of lecture 3 Feature Analysis Image is broken into features before being built up into a percept broadly consistent with neuronal properties of the visual system Pandemonium Model (Selfridge, 1959) Feature Analysis: Evidence Hubel & Wiesel (1962) V1 cell recordings Simple cells- orientation and position Complex cells- orientation a any location in a part of the visual eld Hyper-complex cells- edge of lines/lines of specic lengths Simple Cell Feature Analysis: Evidence Hubel & Wiesel (1962) V1 cell recordings Simple cells- orientation and position Complex cells- orientation in any location Hyper-complex cells- edge of lines/lines of specic lengths complex cell Feature Analysis: Evidence letters are more often confused if they contain the same basic features (eg C & G) when presented quickly (Kinney, 1996) slower same different judgments (Gibson, 1969) Feature Analysis: Evidence Pritchard 1961 fxed an image on the retina by compensating or tiny eye movements Found individual eatures disappeared one at a time instead o the whole image ading let most image is what was presented and the images to the right were what was perceived over time Feature Integration Theory (Anne Treisman) Similar to Feature Analysis theories primitives and features are conceptually similar adds in attentive vs. pre-attentive distinction many features can be processed in parallel pre-attentively must use attention to bind different features together into an object errors in attentive stage result in illusionary conjunctions Gestalt Pattern...
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This note was uploaded on 11/03/2010 for the course COGNITION V89.029 taught by Professor Hilford during the Spring '10 term at NYU.

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Week2_Review - Perception review of lecture 3 Feature...

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