psychophysical function

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In psychophysics, a mathematical expression of the relation between the magnitude of sensations and the intensity of the stimuli that excite them, for example a relation between loudness and sound intensity or between perceived heaviness and mass. See Fechner's law, Fullerton-Cattell law, Merkel's law, Piper's law, power law, Ricco's law, Weber's law. See also psychophysical scale.

Subjects: Psychology.

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