BCS 110 Lecture Notes - Lecture 10: Sodium Channel, Color Vision, Systematic Chaos
29 Oct 2018
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Document Summary
Rods do not supply info concerning color, but they"re most sensitive to shorter wavelengths of light. 3 types of cones in the retina. Activate 3 different types of cones : red and green cones equally = yellow. The ratio of the three types of cones can vary widely in individuals with normal color vision. Very few blue - by the time the light reaches your retina, too blurry for blue. Trichromatic theory: color is encoded by the ratio of activity in the three kinds of receptors. Opponent-process theory: color processed in an antagonistic manner (red/green, blue/yellow, white/black) If you stare at something, the rest of the world goes away. If you could stare at one single spot, you will have the perfect color vision. We continually scan the world with small and quick eye movements: saccades. These bits of info are summated over time (temporal integration) The visual system responds fast to change.
