inhibitory postsynaptic potential

noun

: increased negativity of the membrane potential of a neuron on the postsynaptic side of a nerve synapse that is caused by a neurotransmitter (as gamma-aminobutyric acid) which renders the membrane selectively permeable to potassium and chloride ions on the inside but not to sodium ions on the outside and that tends to inhibit the neuron since an added increase in potential in the positive direction is needed for excitation
abbreviation IPSP

Dictionary Entries Near inhibitory postsynaptic potential

inhibitory

inhibitory postsynaptic potential

inhomogeneity

Cite this Entry

“Inhibitory postsynaptic potential.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/inhibitory%20postsynaptic%20potential. Accessed 30 Jan. 2023.

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