________ occurs 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.
A)Temporal summation
B)Spatial summation
C)A normal action potential

Question

Quizplus · Accepted Answer

Temporal summation occurs when several IPSPs arrive in rapid succession from a single dendritic location, leading to an increasingly hyperpolarized postsynaptic cell and preventing an action potential. Spatial summation, on the other hand, occurs when multiple PSPs (either IPSPs or excitatory postsynaptic potentials) arrive at different dendritic locations simultaneously, leading to a combined effect on the axon hillock. A normal action potential is the result of depolarization of the membrane potential to a threshold level, followed by the opening of voltage-gated ion channels and the initiation of an action potential.

________ Occurs When Several Inhibitory Postsynaptic Potentials (IPSPs)arrive at the Axon