depolarization

n. a reduction in the electric potential across the plasma membrane of a cell, especially a neuron, such that the inner surface of the membrane becomes less negative in relation to the outer surface. Depolarization occurs when the membrane is stimulated and sodium ions (Na⁺) flow into the cell. If the stimulus intensity exceeds the excitatory threshold of the neuron, an action potential is created and a nerve impulse propagated. Compare hyperpolarization.

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Psychology term of the day

November 18th 2024

Fraser syndrome (Fraser–François syndrome)

Sorry, "fraser-syndrome-fraser-francois-syndrome" is not in the Dictionary of Psychology. Please report to APA if you believe this is an error.