Chapter 4 - Sensation & Perception Sensation experience...

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Sensation – experience associated with a simple stimulus (ex. A light, a sound) Perception – subsequent organization of sensory information and interpretations extracted from it Bottom-up processing analysis of the stimulus begins with the sense receptors and works up to the level of the brain and mind “A” is really a blotch broken down into features by the brain that we perceive as an “A” The Retina Rods – operate under low illumination (achromatic) Cones – operated under high illumination (chromatic) light energy → rod (sense receptor) photochemical rhodopsin, which triggers chemical reactions which cause change in electrical charge across membrane (transduction) → action potentials in neurons Color Vision Trichromatic Theory T. Young and H. von Helmholtz proposed that the eye detects 3 primary colors (red, blue, green) Law of 3 Primaries – combinations of the colors
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This note was uploaded on 01/20/2012 for the course PSYCH 111 taught by Professor Schreier during the Fall '08 term at University of Michigan.

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Chapter 4 - Sensation & Perception Sensation experience...

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