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The effects of impulse noise on the auditory system.

Authors
Henderson-D; Hamernik-RP; Salvi-RJ
Source
NIOSH 1981 Jan; :1-14
Link
NIOSHTIC No.
00135175
Abstract
A 9 year project to determine the effects of impulse noise on the auditory system is reviewed. The scope of the project includes: generation and systematic classification of impulse noise stimuli over a wide range of physical parameters; exposure of experimental animals to well specified impulses; measurement of the simultaneous effects on histology, electrophysiology, and behavior; and correlation of the stimulus parameters with electrophysiological, histological, and behavioral results. The synergistic interactions between noise and other auditory traumatic agents are noted. The relationship between symptoms of noise induced permanent threshold shift and the underlying pathophysiology by the creation of controlled hearing losses and sampling of nerve fiber responses is described. Progress in establishment of damage risk criteria is assessed. Experiments on impulse intensity and duration, frequency effects for temporary threshold shifts, effects of background noise on the status of hearing after impulse noise exposure, and effects of number of impulses and repetition rate are discussed. Mechanisms of hearing loss, physiology of noise induced hearing loss, morphological correlates of noise induced hearing loss, and auditory assessment procedures are examined.
Keywords
NIOSH-Grant; Ear-disorders; Nerve-damage; Medical-monitoring; Physiological-measurements; Occupational-exposure; Employee-exposure; Safety-research
Publication Date
19810101
Document Type
Final Grant Report
Funding Amount
651569
Funding Type
Grant
Fiscal Year
1981
NTIS Accession No.
PB85-103893
NTIS Price
A03
Identifying No.
Grant-Number-R01-OH-00364
NIOSH Division
OEP
Priority Area
Noise-induced-hearing-loss
Source Name
NIOSH, U.S. Department of Health, Education, and Welfare
State
NY
Performing Organization
Upstate Medical Center, Syracuse, New York
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