absolute threshold


Also found in: Dictionary, Thesaurus, Legal, Financial, Encyclopedia, Wikipedia.
Related to absolute threshold: Signal detection theory

ab·so·lute thresh·old

the lowest limit of any perception. Compare: differential threshold.
Synonym(s): stimulus threshold

absolute 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 Threshold

The lowest detectable intensity of a given signal—e.g., sound or light.

absolute threshold

in 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.
References in periodicals archive ?
Electing to model adaptation with a 4[degrees]C absolute threshold shift for Milan would suggest that the least effect climate change will have on heat-related mortality is an additional 44 heat-related deaths (per 100,000) each year compared with the present day (Figure 2).
Labels that present aggregated information in terms of a threshold may employ absolute thresholds of nutritional value or relative thresholds that compare a product to other products within a food group.
Indeed, considering the large size of the standard errors of threshold estimates from Bayesian staircases (Alcala-Quintana & Garcia-Perez, 2004), those data points are so minimally below the respective absolute threshold that they could be considered within the threshold bias.
However, in practice absolute thresholds usually cannot withstand the pressures of changing circumstances and are not as absolute as the term would appear to imply.
An absolute threshold value to the amount of CO2 that may be released to the atmosphere during the entire lifecycle of the fuel
An adaptive procedure similar to the up-down method (Levitt, 1971) was used to track absolute thresholds of the horn sounds in each of the background noise conditions as well as in quiet.
Many false alarms occur when engineers choose alarm settings based on absolute thresholds set at how the system has been operating.