| 释义 |
inhibitory postsynaptic potential
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. inhibitory postsynaptic potential
in·hib·i·tor·y post·syn·ap·tic po·ten·tial (IPSP), the change in potential produced in the membrane of the next neuron when an impulse that has an inhibitory influence arrives at the synapse; it is a local change in the direction of hyperpolarization; the frequency of discharge of a given neuron is determined by the extent to which impulses that lead to excitatory postsynaptic potentials predominate over those that cause inhibitory postsynaptic potentials.in·hib·i·tor·y post·syn·ap·tic po·ten·tial (in-hib'i-tōr-ē pōst'si-nap'tik pŏ-ten'shăl) The change in potential produced in the membrane of the next neuron when an impulse that has an inhibitory influence arrives at the synapse; it is a local change in the direction of hyperpolarization. See IPSP
See IPSP |