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Science 27 September 1974:
Vol. 185. no. 4157, pp. 1171 - 1172
DOI: 10.1126/science.185.4157.1171
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Articles

Rod Origin of Prolonged Afterimages

Donald I. A. MacLeod 1 and Mary Hayhoe 1

1 Institute of Molecular Biophysics, Florida State University, Tallahassee

Afterimages fade against any unchanging background but generally reappear if the background changes suddenly. Under some conditions, however, a change of background color fails to revive a faded afterimage. This happens only if the interchanged backgrounds equally stimulate the rod receptors. It follows that afterimages seen under these conditions are generated by rods.


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Non-linear, high-gain and sustained-to-transient signal transmission from rods to amacrine cells in dark-adapted retina of Ambystoma.
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