psychophysics /psy·cho·phys·ics/ (-fiz´iks) scientific study of quantitative relations between characteristics or patterns of physical stimuli and the sensations induced by them.
psychophysics
psy·cho·phys·ics (s  k -f z ks)n. The branch of psychology that deals with the relationships between physical stimuli and sensory response. |
psychophysics
[-fiz′iks]
Etymology: Gk, psyche + physikos, natural
the branch of psychology concerned with the relationships between physical stimuli and sensory responses.
psychophysics
Branch of science that deals with the relationship between the physical stimuli and the sensory response. The measurements of thresholds (e.g. visual acuity, dark adaptation) or matching of stimuli (as in the spectral luminous efficiency curve) are examples of psychophysics. See experimental optometry.
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