inhibitory postsynaptic potential

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inhibitory postsynaptic potential

[in′hib·ə·tȯr·ē pōst·sə′nap·tik pə′ten·chəl]
(neuroscience)
A transient, graded hyperpolarization of the postsynaptic membrane, mediated by a chemical neurotransmitter, in response to action potentials arriving at the endings of the presynaptic neurons.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.