Hearing Threshold Shifts from Repeated 6-h Daily Exposure to Impact Noise

Roger P. Hamernik, William A. Ahroon, Robert I. Davis, Sheau-Fang Lei

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Exposure of chinchillas to broadband, high-level impact noise on an interrupted 6-h daily schedule over 20 days has shown that pure-tone thresholds measured immediately following each daily exposure improve as much as 30 dB despite the continuing noise exposure. the time constant of this recovery effect (toughening) and the magnitude of the effect are related to the audiometric test frequency and the exposure energy. the trauma, quantified by permanent threshold shifts and sensory cell losses, produced by the interrupted exposure paradigm is generally less than that produced by an equal-energy uninterrupted exposure. The wide variations in the temporal pattern of threshold shift across similarly exposed animals suggest that the toughening effect reflects the underlying susceptibility of that animal to noise trauma.

Original languageEnglish
Pages (from-to)444-453
Number of pages10
JournalJournal of the Acoustical Society of America
Volume95
Issue number1
DOIs
Publication statusPublished - 1994 Jan 1

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hearing
thresholds
animals
schedules
time constant
Hearing
recovery
broadband
magnetic permeability
energy
cells

All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Arts and Humanities (miscellaneous)

Cite this

Hamernik, Roger P. ; Ahroon, William A. ; Davis, Robert I. ; Lei, Sheau-Fang. / Hearing Threshold Shifts from Repeated 6-h Daily Exposure to Impact Noise. In: Journal of the Acoustical Society of America. 1994 ; Vol. 95, No. 1. pp. 444-453.
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Hearing Threshold Shifts from Repeated 6-h Daily Exposure to Impact Noise. / Hamernik, Roger P.; Ahroon, William A.; Davis, Robert I.; Lei, Sheau-Fang.

In: Journal of the Acoustical Society of America, Vol. 95, No. 1, 01.01.1994, p. 444-453.

Research output: Contribution to journalArticle

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