PSYC 211 Lecture Notes - Lecture 9: Color Blindness, Opsin, Ganglion Cell
6 Nov 2018
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Document Summary
By determining the relative activation of the three cones. Colours are discriminated by the ratio of activity across the three types of cones. When looking at a white piece of paper, the light (red, blue and green), the paper appears white because these three colour create white. Brightness if 0, hue and saturation have no effect. Red cones are filled with green cone opsin. Green cones are filled with red cone opsin. Opaque and does not allow any light in. Shape can change to allow the eye to focus. Rods are very sensitive to low levels of light. When the light gets brighter, the cones are activated and colours can be detected. Point where optic nerve exits the back of the eye. G-protein coupled receptors that is activated by lights. Opsins that detect the light are all the way at the back of the eye and retina. Gives rise to the optic nerve which goes back to the brain.
