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excitatory postsynaptic potential

   Also found in: Wikipedia 0.01 sec.
ex·ci·ta·to·ry postsynaptic potential (k-st-tôr)
n.
A local change in the depolarization produced in the postsynaptic neuronal membrane in response to an excitatory impulse; summation of these depolarizations can lead to discharge of an impulse by the neuron.
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This increase in L-type channels is correlated with increased failure of excitatory postsynaptic potentials as well as increased susceptibility to cell death.
Calcium Channels: Critical Targets of Toxicants and Diseases by Fletcher, Colin / Environmental Health Perspectives
The amplitude of both the aggregate (population) and unitary (single axon) group Ia excitatory postsynaptic potentials recorded from motoneurons is larger if both the motoneuron and the afferent innervate the same compartment than if one or the other innervates a different compartment of the same muscle.
Compartmentalization of muscles and their motor nuclei: the ... by Segal, Richard L. / Physical Therapy
After stability of the recording had been obtained [recording for at least 30 min after mounting and a population field excitatory postsynaptic potential (fEPSP) of constant amplitude], we recorded control responses and applied tetanic stimuli consisting of two separate 1-sec stimulations, each at the test intensity at 100 Hz with the two stimulations separated by 5 sec.
In Vivo and in Vitro Exposure to PCB 153 Reduces Long-Term ... by Carpenter, David O. / Environmental Health Perspectives
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