Action potentials are all-or-none phenomena. This means that
A) they must fire a certain number of times a second to communicate information accurately.
B) they require a certain amount of stimulus to fire.
C) the amplitude of the action potential is independent of the size of the stimulus.
D) the amplitude of the action potential changes based on the intensity of the stimulus.

Question

Quizplus · Accepted Answer

Action potentials are generated when the depolarization of the membrane potential reaches a certain threshold, at which point the action potential fires at a fixed amplitude and duration. The size of the stimulus does not affect the magnitude of the action potential, thus it is an all-or-none phenomenon.

Action Potentials Are All-Or-None Phenomena. This Means That