Definitions for "Excitatory postsynaptic potential"
The depolarization of a postsynaptic membrane by a chemical neurotransmitter released by the presynaptic cell.
A postsynaptic change in membrane potential that promotes firing of an action potential in the postsynaptic cell, by bringing the membrane potential toward the threshold potential.
A change in the resting potential of a postsynaptic membrane in a positive (depolarizing) direction. (Contrast with inhibitory postsynaptic potential.)