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PSYCH 1XX3 (1,109)
Joe Kim (1,028)
Lecture

Live Lecture - Colour Perception
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Department
Psychology
Course
PSYCH 1XX3
Professor
Joe Kim
Semester
Winter

Description
February 26, 2012  Visual Processing and top-down processing o Chess pieces  Eye-tracking technology  Colour perception o Google, google, google  Vision is perceiving electromagnetic energy o Numerous possibilities o Visible spectrum  Humans o Infrared  Thermoreceptors in skin of human  Rattlesnakes can see infrared light  Bias: colours around you are just in your head o Frogs trying to camouflage into the environment  red frog: secretes toxins from skin to scare away predators o foraging hypothesis  organisms that have better visual perception are better able to forage o marmoset colour perception It has been suggested that the major advantage of trichromatic over dichromatic colour vision in primates is enhanced detection of red/yellow food items such as fruit against the dappled foliage of the forest. This hypothesis was tested by comparing the foraging ability of dichromatic and trichromatic Geoffroy's marmosets (Callithrix geoffroyi) for orange- and green-coloured cereal balls (Kix) in a naturalized captive setting. Trichromatic marmosets found a significantly greater number of orange, but not green, Kix than dichromatic marmos
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