The neurophysiology of hearing: I. The magnitude of threshold-stimuli during recovery from stimulation-deafness.

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Abstract
Following exposure to tones of different loudness, threshold-stimuli were measured as a function of recovery-time. Exposure-intensities were 42, 82, and 102 db. above a reference level of 0.204 millibar. Exposure-time (5 min.) and frequency (800 c.p.s.) were parameters. All measurements were secured by the method of limits. The threshold-stimulus as a function of post-exposure time was found to decrease continuously, until it approximated its pre-exposure value. At any instant during the interval of recovery, the magnitude of the threshold-stimulus varied directly with the exposure-intensity, and the duration of the total recovery-period varied directly with the exposure-intensity. The findings are explained in terms of the principle of neural availability.

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