Photoreceptors are depolarized in the absence of stimulation (i.e., in the dark) and hyperpolarized when stimulated (i.e., when exposed to light).

Question

Quizplus · Accepted Answer

This statement is true. Photoreceptors, such as rods and cones in the retina of the eye, have a resting membrane potential that is depolarized in the dark. When light stimulates these cells, they become hyperpolarized, leading to the transmission of a neural signal to the brain.

Photoreceptors Are Depolarized in the Absence of Stimulation (I