PSY280H1 Lecture Notes - Lecture 5: Lateral Geniculate Nucleus, Color Basic, Trichromacy
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PSY280H1 Full Course Notes
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Saturation: chromatic strength of a hue (how much hue in light. Brightness: distance from black in color space (physical intensity of light) Rgb space: a cube, with white and black as diagonally opposite corners. Hsb space: two cones, connected at their base, with white at the top tip and black at the bottom tip. Lateral geniculate nucleus has cells that are maximally stimulated by spots of light. Cells with receptive fields that have center surround organization. Similar antagonistic relationship when it comes to color. Some cells: excited by l-cone onset in center, inhibited by m- Neuron whose output is based on a difference between sets of cones. Opponent color theory: the theory that perception of color is based on the output of three mechanisms, each of them ba red green blue yellow. 85 red green blue yellow black white. Many color mixes are legal e. g. , bluish green, reddish yellow. Hering used four basic colors (two opponent pairs):
