Differential Threshold

Difference Limens; Difference, Just-Noticeable; Differences, Just-Noticeable; Differential Thresholds; Just Noticeable Difference; Just-Noticeable Differences; Law, Weber-Fechner; Limen, Difference; Limens, Difference; Threshold, Differential
The smallest difference which can be discriminated between two stimuli or one which is barely above the threshold.