excitatory postsynaptic potential

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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.

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.

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.
References in periodicals archive ?
Methods: Field excitatory postsynaptic potentials (fEPSPs), spontaneous excitatory postsynaptic currents (sEPSCs) and miniature spontaneous excitatory postsynaptic currents (mEPSCs) were recorded, by using in vitro field potential electrophysiology and whole-cell patch clamp techniques in acute hippocampal slices from rats.
For the field excitatory postsynaptic potentials (fEPSPs) recording, three-month old male Sprague-Dawley rats (200-250 g) were obtained from the Sun Yat-sen University, China.
Therefore, in the present study we tested whether TDE can modulate dendritic field excitatory postsynaptic potentials (fEPSPs), which indicate the neuronal synaptic function, in Cornu Ammonis 1 (CA1) hippocampal slices of normal rats as found in current AChE-I drugs used for AD therapy.
This increase in L-type channels is correlated with increased failure of excitatory postsynaptic potentials as well as increased susceptibility to cell death.
Halogenated aromatic hydrocarbons suppress CA1 field excitatory postsynaptic potentials in rat hippocampal slices.