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Scientists Detail Neural Circuit

Nearly 40 years ago scientists were startled to discover that the eye, far from being a still camera, actually has cells that respond to movement. Moreover, these cells are specialized to respond to movement in one direction only, such as left to right or right to left. Now, in a paper in this week’s issue of the journal Nature, biologists at the University of California, Berkeley, have finally detailed the cellular circuit responsible for motion detection in the eye’s retina.