Effect of adapting target size on the gain of the surround response mechanism in X- and Y-cells in cat retina |
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| Authors: | W G Christen R W Winters H I Cohen T W Robertson |
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| Institution: | (1) Department of Psychology, University of Miami, Box 248185, 33124 Coral Gables, Florida, USA;(2) William L. McNight Vision Research Center, University of Miami School of Medicine, 1638 N.W. 10th Avenue, 33152 Miami, Florida, USA |
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| Abstract: | Summary The adaptation field of the surround mechanism of X and Y retinal ganglion cells in the cat was assessed with variable size, unmodulated adapting spots. Both an on-inhibition measure and an off-discharge measure of surround gain was used. Results suggest that the surround mechanism in Y-cells is strongest in the receptive field middle but weak or nonexistent in the middle of X-cell receptive fields.Acknowledgment. This research was supported by Public Health Service grant No. EY 00701. |
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