Which of the following best describes the electrical response of the rods to light?
Correct Answer: Hyperpolarization
Description: The rod receptor potential is hyperpolarizing, not depolarizing. It is a receptor potential not action potential. Hyperpolarization leads to decrease in the release of glutamate, an excitatory neurotransmitter, from the synaptic terminals of the photoreceptor.
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Physiology
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