Biology / Bio 2913 · Atom · ~20 seconds
Retinal Processing: Lateral Inhibition
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Horizontal cells inhibit neighboring photoreceptors and bipolar cells when one is stimulated, a process called lateral inhibition that sharpens edges and boosts contrast before signals leave the retina.
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Lateral inhibition makes a lit region appear brighter and its dark surroundings darker at their boundary.
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Significant visual processing happens within the retina itself, before the optic nerve, not only in the visual cortex.
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