inhibitory postsynaptic potential

noun

Medical Definition of inhibitory postsynaptic potential

: 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

Learn More About inhibitory postsynaptic potential

Dictionary Entries Near inhibitory postsynaptic potential

inhibitory

inhibitory postsynaptic potential

inhomogeneity

See More Nearby Entries 

Cite this Entry

“Inhibitory postsynaptic potential.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/inhibitory%20postsynaptic%20potential. Accessed 22 Oct. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

WORD OF THE DAY

Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!