A stimulus so weak that a person can detect its presence only 50% of the time is a stimulus at the

Question

Quizplus · Accepted Answer

The absolute sensory threshold is the minimum intensity of a stimulus needed to detect its presence 50% of the time. Therefore, Option A is the correct answer. Option B refers to a stimulus that is below the threshold for conscious awareness, while options C and D refer to different concepts that are not related to the sensory threshold.

A Stimulus So Weak That a Person Can Detect Its