psychophysics

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psychophysics

 [si″ko-fiz´iks]
scientific study of the quantitative relations between characteristics or patterns of physical stimuli and the sensations induced by them.

psy·cho·phys·ics

(sī'kō-fiz'iks),
The science of the relation between the physical attributes of a stimulus and the measured, quantitative attributes of the mental perception of that stimulus (for example, the relationship between changes in decibel level and the corresponding changes in the human's perception of the sound).

psychophysics

(sī′kō-fĭz′ĭks)
n. (used with a sing. verb)
The branch of psychology that deals with the relationships between physical stimuli and sensory response.

psy′cho·phys′i·cal adj.
psy′cho·phys′i·cal·ly adv.
psy′cho·phys′i·cist (-fĭz′ĭ-sĭst) n.

psy·cho·phys·ics

(sī'kō-fiz'iks)
The science of the relation between the physical attributes of a stimulus and the measured, quantitative attributes of the mental perception of that stimulus.

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.

psy·cho·phys·ics

(sī'kō-fiz'iks)
Science of relation between physical attributes of a stimulus and measured quantitative attributes of mental perception of that stimulus.
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References in periodicals archive ?
Fechner's mind was closed because of his commitment to the doctrine of pythagoreanism and, being thus, he presented his psychophysical methods as methods of measurement within a milieu that shared similar views (Hacking, 1983; Michell, 1990).
When in 1940, a committee established by the British Association for the Advancement of Science to consider and report upon the possibility of quantitative estimates of sensory events published its final report (Ferguson et al., 1940) in which its non-psychologist members agreed that psychophysical methods did not constitute scientific measurement, many quantitative psychologists realized that the problem could not be ignored any longer.
He believed that his psychophysical methods produced scales of 'true numerical magnitude' (1936b, p.
However, this variety of liberalized representationalism also posed a threat to psychological measurement and, especially, to Stevens' psychophysical methods. If measurement involves the numerical representation of empirical relational structures and such structures are understood realistically (i.e.
They concluded that psychophysical methods may not be appropriate for judging tasks with high peak stress at the low back.
Furthermore, to address the problem of back stresses not being well perceived, additional psychophysical methods and scales should be studied.
Finally, psychophysical methods that place most trials in a narrow range of stimulus levels and fail to sample across the region of support of [PSI] are remarkably inefficacious and greatly underestimate [sigma].
All things considered, the QUESTion is yet unsolved as to what psychophysical method places its allowance of trials at the stimulus levels that turn out to be most useful for an accurate estimation of [PSI].
our ultimate goal is to provide practicing psychophysicists with instructions as to how to configure the psychophysical method that renders the best sampling plan for the estimation of [PSI].
Was utilized the psychophysical method of stairs for estimate of contrast threshold according to the spatial frequency tested to statistically infer the mean differences.
For example, the present study used the psychophysical forced-choice method for measuring the response of visual CS, while Castro and colleagues used the psychophysical method of adjustment.

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