PSY280H1 Lecture : chap 9 textbook notes
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PSY280H1 Full Course Notes
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Some functions of color vision: facilitate perceptual organization group elements, gestalt, allow object discrimination, pick out objects in scenes. B/c enhances contrast of objects that"s similar in grayscale. Selective transmission only some wavelength pass through the transparent objects or substances. Suggested reason for color vision in monkey & humans. Ex. picking berries easier w/ color vision: recognize & identify things easier. Ex. pink banana identification longer time than yellow banana superimposed, all the light that is reflect from the surface by each light when alone is also reflected when the lights are superimposed. Summed together light contains all the wavelength from one color combined with all the wavelength from the other color. What colors do we perceive: can describe all perceivable colors w/ red, yellow, green, blue & combinations of these 4 terms. Minimal amount of colors need to describe spectrum. Other colors (orange, violet, purple, brown) not needed: extraspectral colors colors that do not appear in the spectrum.
