An excitatory postsynaptic potential (EPSP):
A) results in partial depolarization of the neuron.
B) always causes a neuron to fire.
C) prevents a neuron from firing.
D) results in partial hyperpolarization of the neuron.
E) changes the action potential threshold level.

Question

Quizplus · Accepted Answer

An excitatory postsynaptic potential (EPSP) results in partial depolarization of the neuron, making the inside of the neuron less negatively charged and closer to the threshold for firing an action potential. It does not always cause a neuron to fire, prevent firing, result in hyperpolarization, or change the action potential threshold level.

An Excitatory Postsynaptic Potential (EPSP)