How is the strength of a stimulus encoded by neurons?
A) by the size of action potentials
B) by the frequency of action potentials
C) by the duration of action potentials
D) by whether the action potential peak is positive or negative

Question

Quizplus · Accepted Answer

The strength of a stimulus is encoded by the frequency of action potentials. When a stimulus reaches a certain threshold, action potentials are generated in neurons. The stronger the stimulus, the more frequently action potentials are fired. Hence, the frequency of action potentials is directly proportional to the strength of the stimulus.

How Is the Strength of a Stimulus Encoded by Neurons