What is the role of excitatory postsynaptic potentials (EPSPs) in the pathophysiology of epilepsy?

Updated: May 30, 2019
  • Author: David Y Ko, MD; Chief Editor: Selim R Benbadis, MD  more...
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Answer

The EPSPs are the main form of communication between neurons, and the release of the excitatory amino acid glutamate from the presynaptic element mediates EPSPs. Three main receptors mediate the effect of glutamate in the postsynaptic neuron: N -methyl-D-aspartic acid (NMDA), alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA)/kainate, and metabotropic. These are coupled by means of different mechanisms to several depolarizing channels.


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