Weber-Fechner law
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We·ber-Fech·ner law
the intensity of a sensation varies by a series of equal increments (arithmetically) as the strength of the stimulus is increased geometrically; if a series of stimuli are applied and so adjusted in strength that each stimulus causes a perceptible change in intensity of the sensation, then the strength of each stimulus differs from the preceding one by a constant fraction. Thus, if a perceptible change in a visual sensation is produced by the addition of 1 candle to an illumination with an original strength of 100 candles, then 10 candles will be required to produce a perceptible change in sensation in an illumination with an original strength of 1000 candles.
Synonym(s): Fechner-Weber law, Weber law
Farlex Partner Medical Dictionary © Farlex 2012
We·ber-Fech·ner law
(vā'ber-fek'nĕr law)The intensity of a sensation varies by a series of equal increments (arithmetically) as the strength of the stimulus is increased geometrically; if a series of stimuli is applied and so adjusted in strength that each stimulus causes a just-perceptible change in intensity of the sensation, then the strength of each stimulus differs from the preceding one by a constant fraction.
Synonym(s): Fechner-Weber law, Weber law.
Synonym(s): Fechner-Weber law, Weber law.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
Weber-Fechner law
orFechner's law
a law stating that sensation increases arithmetically as the stimulus increases geometrically Named after Ernst Weber (see WEBERIAN OSSICLE and the German physicist Gustav Fechner (1801–87).Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
Fechner,
Gustav T., German physicist, 1801-1887.Fechner paradox - refers to apparent increase in brightness of a figure when viewed with one eye after first viewing with both eyes.
Fechner-Weber law - Synonym(s): Weber-Fechner law
Weber-Fechner law - see under Weber, Ernst Heinrich
Weber,
Ernst Heinrich, German physiologist and anatomist, 1795-1878.Fechner-Weber law - Synonym(s): Weber-Fechner law
Weber experiment - if the peripheral end of the divided vagus nerve is stimulated, the heart is arrested in diastole.
Weber law - Synonym(s): Weber-Fechner law
Weber paradox - if a muscle is loaded beyond its power to contract, it may elongate.
Weber-Fechner law - the intensity of a sensation varies by a series of equal increments as the strength of the stimulus is increased geometrically. Synonym(s): Fechner-Weber law; Weber law
Medical Eponyms © Farlex 2012