As stimulus intensity is increased, recording from a single neuron shows that _____.
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 increases, the rate of firing of the nerve fiber increases. This is due to the fact that the neuron responds to a stronger stimulus by producing action potentials more rapidly. The amplitude of the action potential does not necessarily increase or decrease, but remains relatively constant.

As Stimulus Intensity Is Increased, Recording from a Single Neuron