The Intensity of a Stimulus Can Be Encoded By

Question

The intensity of a stimulus can be encoded by:
A) the amplitude of action potentials in a neuron.
B) the frequency of action potentials in a neuron.
C) the amplitude of graded potentials in a neuron.
D) b and c
E) All of the above

Accepted Answer

An action potential is a discontinuous event of fixed shape and amplitude, with stimulus intensity reflected by an increase in frequency. However, neurons can also exhibit continuous changes in membrane potential in which stimulus intensity is reflected by amplitude.