Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia, Wikipedia.
Related to absolute threshold: Signal detection theory
the lowest limit of any perception. Compare: differential threshold.
Synonym(s): stimulus threshold
Etymology: L, absolutus, set loose; AS, therscold
1 the lowest point at which a stimulus can be perceived.
2 pertaining to millivolts of electrical charge determined by ion fluctuations or movement across plasma membranes that result in nerve or muscle stimulation.
Absolute ThresholdThe lowest detectable intensity of a given signal—e.g., sound or light.
absolute thresholdin psychophysics, the smallest magnitude of a sensory input that can be detected, typically defined as the magnitude that can be detected over a proportion of presentations (e.g. 75%). Also known as absolute limen. See also difference threshold.
ab·so·lute thresh·old(ab-sō-lūt threshōld)
Lowest limit of any perception.