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The electroretinogram c wave during adaptation to the dark in pigmented rabbit

The electroretinogram c wave during adaptation to the dark in pigmented rabbit

Nippon Ganka Gakkai Zasshi 89(11): 1166-1170

C-waves of the pigmented rabbit ERG were recorded during dark adaptation. After strong (253 lux or over) preadaptation with light, the amplitude of the c-waves increased during dark adaptation, reaching a maximum in 8 min, and then decreased gradually to a nadir at about 20 min after the onset of the dark. Simultaneous recording of the standing potential revealed that this nadir reflected the dark-through of the standing potential. We concluded that the maximum of the c-wave amplitude at 8 min was produced by the interference between the increase in c-wave amplitude caused by the recovery of the rod function and the decrease influenced by the standing potential.

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