Electroretinographically-determined scotopic spectral sensitivities of some marine fish
1973
Easter, Jr | Stephen S. | Hamasaki, D. I.
The b-wave threshold spectral sensitivity was determined in three species of marine fish. In all cases, the action spectrum of the dark adapted animal peaked at 510-520 nm and fit Dartnall's template curve for the extinction spectrum of a vitamin A1-based visual pigment. High frequency flicker of the stimulus on a white background revealed a long-wavelengthsensitive photopic mechanism, establishing that these were duplex retinas. We conclude that in these teleosts, the dark adapted b-wave is a reliable indicator of rod function, in marked distinction to the case with goldfish and carp.
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