IPSPs (inhibitory postsynaptic potentials)
A) are graded depolarizations.
B) are graded hyperpolarizations.
C) increase membrane permeability to sodium ions.
D) block the efflux of potassium ions.
E) block the efflux of calcium ions.

Question

Quizplus · Accepted Answer

IPSPs are inhibitory because they produce a hyperpolarization of the postsynaptic membrane, making it less likely for an action potential to fire. This hyperpolarization is a graded potential, meaning its magnitude depends on the intensity of the stimulus.

IPSPs (Inhibitory Postsynaptic Potentials)