Limen

For other uses, see Limen (disambiguation).

In physiology, psychology, or psychophysics, a limen or a liminal point is a threshold of a physiological or psychological response.

Liminal, as an adjective, means situated at a sensory threshold, hence barely perceptible. The absolute threshold is the lowest amount of sensation detectable by a sense organ.

See also

• Just noticeable difference
• Minimal negation operator