PSYC 210 Lecture Notes - Lecture 1: Color Constancy, Agnosia, Hierarchical Organization
30 Mar 2017
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Document Summary
Vision: eye neural signal to hypothalamus sensory info projects to you. Structure of the eye: cornea and lens. Lens are clear so light can penetrate easier: sclera. Controls how much light enters the eye: eye muscles. Control where gaze is directed: pupil. Structure of the retina: rods and cones. Photoreceptors that receive light and turn into electrical signals: when light enters eye it meets retinal ganglion cells (rgc; outermost layer) Rgcs are neurons that send info to brain. Rgc does nothing until light converts to electrical signals for photoreceptors. Each rgc can receive more than 1 input. Sensitive to different colors of light (red, green, blue) Rgb is basis for trichromatic theory of vision: rods. Primarily detects whether light is present or not: opponent processes negative afterimage. Abnormal color vision: color blind no cones, dichromacy. Genes for red and green cones are on x chromosome.
