PSYCH 1XX3 Lecture Notes - Lecture 5: Afterimage, Receptive Field, Magnocellular Cell
29 Mar 2018
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Document Summary
It is easier to tell individual trees apart: colour has a purpose beyond adding richness to aesthetics. Theories of colour vision: trichromatic theory: proposes that the retina contains three different kinds of cones, each of the receptors are maximally sensitive to different wavelength of light. It would be impossible for a single red-green receptor to be active in both the red and green states simultaneously: both theories are needed to explain colour perception. In high-resolution channels, one cone is transmitting information to one ganglion cell; small: ganglion cells have receptor fields, or a region on the retina, when stimulated. Colour processing in the brain: neurons in the co blobs respond to a center-surround fashion. Increases the firing rate of the cell and the complementary colour decreases the rate: colour processing continues to the ventral stream of the extrastriate cortex. In the ventral stream is where colour in integrates with other information: shape, orientation, and movement.
