Rod origin of prolonged afterimages
- PMID: 4415643
- DOI: 10.1126/science.185.4157.1171
Rod origin of prolonged afterimages
Abstract
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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