Electrophysiological evidence for the critical band in humans.
The amplitude of wave V of the auditory brainstem response (ABR) has been found to vary in a manner consistent with the psychophysical critical band data. When the frequency separations between members of a tone pair, displaced symmetrically around some center frequency, exceed some critical value, the amplitude of wave V undergoes an abrupt increase. Specifically, tonal pairs straddling 2 and 4 kHz were studied; abrupt increases in wave V amplitude were generally seen when frequency separations were between 600 and 800 Hz for a center frequency of 4 kHz, and between 200-400 Hz for a 2-kHz center frequency. These electrophysiologically derived estimates are in reasonable agreement with psychophysical values found in the literature.
Zerlin
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D000161:Acoustic Stimulation; D000162:Acoustics; D001307:Auditory Perception; D006309:Hearing; D006801:Humans; D013016:Sound