Julian is getting his eyes tested,and the doctor asks him to indicate when the image on the screen gets brighter or darker than it was previously.The doctor is trying to determine Julian's
A)absolute threshold.
B)adaptation threshold.
C)just noticeable difference.
D)signal detection.

Question

Quizplus · Accepted Answer

The doctor is trying to determine Julian's ability to detect a difference in brightness, which is measured by the just noticeable difference. The absolute threshold refers to the minimum intensity of a stimulus that can be detected, while adaptation threshold refers to the point at which sensory adaptation occurs. Signal detection refers to the ability to distinguish between a signal and noise.

Julian Is Getting His Eyes Tested,and the Doctor Asks Him