Question

The absolute threshold is the:

A. decreasing sensitivity to a stimulus over time.
B. intensity of a stimulus that can be detected in the presence of noise.
C. minimal intensity needed to just barely detect a stimulus.
D. minimal change in a stimulus that can just barely be detected.

Answer 1

C. minimal intensity needed to just barely detect a stimulus.

Step-by-step explanation:

Answer 2

C. minimal intensity needed to just barely detect a stimulus.

Step-by-step explanation:

Absolute threshold is one of the most important terms in psychophysics and refers to the minimum threshold for a stimulus to cause a sensation.

In other words, the absolute threshold is the minimum amount of energy for a stimulus to be detected in at least 50% of attempts. The higher the absolute threshold, the lower the sensitivity to stimuli.