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- 30-35% of brain dedicated to vision
- you don't see with your eyes
- Retina: a little thinner than a credit card
- 5 million cones Wikipedia Cone cell
- 100 million rods Wikipedia Rod cell
- concentration of cones in the Fovea (point of sharpest seeing)
- retina (rods) can pick up individual photon (!) - [gets filtered out, tho]
- Achromatopsia: no cones, rods easily saturated > see only bright fog
- wavelengths: long, medium, short
- very different distributions of photoreceptors - everyone sees color differently - no such thing as objective color
- (?) mothers of color-blind sons have 4 cone photoreceptors (at least genes - but hooked up?)
- (?) most naturally occurring wavelengths can be perceived w/ 3 cones
- different ganglian cells carry different information (fine, some details?)
- in fish, brain feeds back to retina ("but then, fish are odd")
- Saccade: eye jumpery
- if no eye movement, things fade out
- can't see your own eye movement due to Saccadic Suppression


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