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The Psychophysical Law
Sensation and Measurement
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apparent approximately asked attribute average basilar membrane bisection brightness category scale CN CN CN constant continua contours cross-modality matching curvature curve decibels Fig density determined equal loudness equisection example experimenter experiments Fechner frequency geometric mean hertz hysteresis increases increment intervals intramodal matching judged kind light logarithmic function logarithmic law luminance magnitude estimation magnitude scale masking matching function measurement metathetic monaural nanometers neural observer's observers adjusted obtained order bias partition scale perceptual pitch plotted poikilitic function ponent potentials power function power law predicted presented procedure produced prothetic continuum Psychol psychophysical pure tones ratio scale regression effect relation represent Reprinted by permission response seems sensation sense modalities sensory sensory systems shown in Fig slope exponent sones Sound pressure level standard stellar magnitude stimulus level stimulus range subjective threshold variability vibration virtual exponent visual wavelength Weber's law white noise words