Primates Eye
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Primate's Eye

July 27, 2010
The eye's retina is composed of three layers of cells. Rods and cones are in the input cell layer. They sense light and convert this information into electrical signals that they send along to the intermediate cell layer. Those cells then transfer the signals to the output cells. or "retinal ganglion cells." There are about 22 ganglion cell types known in the primate retina but only about six of them have been well-described physiologically. Recently researchers have been able to describe the electrophysiology of the upsilon cell. The renderings shown here are an artist's conception. No micrographs of these cells have been taken yet.

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