Year: 1976
Type: conference-abstract
Abstract: Groups of human observers were placed in a diffuse sound field for 26-h and exposed to an octave-band noise centered at 4.0 kHz. Levels of the noise were 75, 80, 83, and 88 dB SPL. Threshold shifts produced by the noise increased for the first 4–8 h of exposure and then reached a plateau or asymptote. Threshold shifts at asymptote for test tones of 4.0 or 6.0 kHz increased about 1.7–2.0 dB for every 1-dB increase in the level of the noise above about 72 dB. However, at the frequency of maximum threshold shift (4.5–5.5 kHz depending upon the observer), the increase in threshold shift was about 3.0 dB for every 1-dB increase in the level of the noise above 73 dB. Complete recovery of auditory thresholds occured for every observer and required between 16 and 48 h. Such long recovery times were observed even when the magnitude of the threshold shift at asymptote was less than 10 dB. [Supported by NIEHS.]
DOI: 10.1121/1.2003058
Authors: J. H. Mills, R. M. Gilbert, Warren Y. Adkins
Institution: Medical University of South Carolina
Language: English
Subfield: Sensory Systems
Field: Neuroscience
Domain: Life Sciences
Open Access status: bronze
OpenAlex ID: W1993314786