As stimulus intensity is increased, recording from a single neuron shows
A) the amplitude of the action potential increases.
B) the amplitude of the action potential decreases.
C) the amplitude of the action potential may increase or decrease, depending on the stimulus.
D) the rate of firing of the nerve fiber increases.

Question

Quizplus · Accepted Answer

As stimulus intensity is increased, the rate of firing of the nerve fiber increases. This is also known as frequency coding, where the frequency of action potentials encodes the intensity of the stimulus. The amplitude of the action potential remains relatively constant regardless of the stimulus intensity.

As Stimulus Intensity Is Increased, Recording from a Single Neuron