Inhibitory influence of unstimulated rods in the human retina: evidence provided by examining cone flicker

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Science  08 Jul 1983:
Vol. 221, Issue 4606, pp. 180-182
DOI: 10.1126/science.6857279


In the parafoveal retina of human observers, cone-mediated sensitivity to flicker decreases as rods become progressively more dark-adapted. This effect is greatest when a rod response to flicker is precluded. These results indicate that rods tonically inhibit cone pathways in the dark.