Question

which of the following statements regarding the determination of stimulus intensity is true? multiple choice stronger intensity stimuli cause rapid adaptation, while weaker stimuli cause slower adaptation. the amplitude of action potentials increases with increasing stimulus intensity. the duration of receptor potentials decreases with increasing stimulus intensity. the frequency of action potentials increases with increasing stimulus intensity. the only means of detecting intensity changes is through recruitment of greater numbers of sensory units.

Explanation:

1. Adaptation rate is not directly related to stimulus intensity in the way described in the first option.
2. Action - potential amplitude is an all - or - none phenomenon and does not increase with stimulus intensity.
3. The duration of receptor potentials usually increases with increasing stimulus intensity, not decreases.
4. The frequency of action potentials is a major way to code stimulus intensity. As stimulus intensity increases, the frequency of action potentials increases.
5. Recruitment of more sensory units is one way to detect intensity changes, but not the only way.

Answer:

The frequency of action potentials increases with increasing stimulus intensity.