Intracellular Recordings from Single Rods and Cones in the Mudpuppy Retina

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Science  15 Jun 1973:
Vol. 180, Issue 4091, pp. 1178-1181
DOI: 10.1126/science.180.4091.1178


Mudpuppy rod and cone responses differ both in time course of recovery and in absolute sensitivity. Rods are about 25 times more sensitive than cones and appear to generate a larger voltage per quantum absorbed. Comparison of mudpuppy receptor sensitivities to those of other vertebrates suggests that the difference in sensitivity between rods and cones may be a general phenomenon.