Hyperpolarization occurs when:

Question

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Hyperpolarization occurs when the electric potential of a photoreceptor goes from a negative resting state to a more negative state. This is usually caused by the activation of light-sensitive ion channels, which allows negatively charged ions such as chloride (Cl-) to flow into the cell or positively charged ions such as potassium (K+) to flow out of the cell, making the inside of the cell more negative. This change in electric potential is responsible for the initial steps in vision, as it triggers a cascade of signals that ultimately lead to the transmission of visual information to the brain.

Hyperpolarization Occurs When