When Several Inhibitory Postsynaptic Potentials (IPSPs) Arrive at the Axon

Multiple Choice

When several inhibitory postsynaptic potentials (IPSPs) arrive at the axon hillock rapidly in sequence from a single dendritic location, hyperpolarizing the postsynaptic cell more and more and thus preventing an action potential, this is an example of

A) temporal summation.
B) spatial summation.
C) a normal action potential.
D) an action potential with an abnormally high peak of depolarization.