Which of the following corresponds to the photoreceptor "dark current"? Choose the correct option
A) At rest, the membrane potential of a rod outer segment is about –30 mV.
B) Some retinal current is light and some is dark because of photoreceptor pigmentation.
C) The resting membrane potential of a rod outer segment is –65 mV.
D) The movement of negative current across the photoreceptor membrane in the dark.
Ans: A
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