excitatory postsynaptic potential

(redirected from Excitatory postsynaptic process)

ex·cit·a·to·ry post·syn·ap·tic po·ten·tial (EPSP),

the change in potential that is produced in the membrane of the next neuron when an impulse that has an excitatory influence arrives at the synapse; it is a local change in the direction of depolarization; summation of these potentials can lead to discharge of an impulse by the neuron.
Farlex Partner Medical Dictionary © Farlex 2012

ex·cit·a·to·ry post·syn·ap·tic po·ten·tial

(ek-sī'tă-tōr-ē pōst'si-nap'tik pŏ-ten'shăl)
The change in potential that is produced in the membrane of the next neuron when an impulse that has an excitatory influence arrives at the synapse; it is a local change in the direction of depolarization; summation of these potentials can lead to discharge of an impulse by the neuron.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

excitatory postsynaptic potential (EPSP)

a reduction in the RESTING POTENTIAL of a postsynaptic cell caused by the arrival of TRANSMITTER SUBSTANCE from the presynaptic cell. The reduction takes the membrane potential close to the THRESHOLD and, therefore, nearer to itself forming an ACTION POTENTIAL. see FACILITATION.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005