When several IPSPs arrive at the axon hillock rapidly in sequence ...

[geoffrey]

When several 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) tetanus.
D) the refractory state.
E) an action potential with an abnormally high peak of depolarization.

[j_sun]

I recall doing this last year, it's A, bye bye!