The Effect of Short-Term Noise Exposure on Audiometric Thresholds, Distortion Product Otoacoustic Emissions, and Electrocochleography
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Published:2019-02-26
Issue:2
Volume:62
Page:410-422
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ISSN:1092-4388
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Container-title:Journal of Speech, Language, and Hearing Research
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language:en
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Short-container-title:J Speech Lang Hear Res
Author:
Lake Alyson Butler1,
Stuart Andrew1
Affiliation:
1. Department of Communication Sciences & Disorders, East Carolina University, Greenville, NC
Abstract
Purpose
The purpose of the study was to examine the effect of short-term noise exposure on audiometric thresholds, distortion product otoacoustic emissions (DPOAEs), and electrocochleography (ECochG) as a function of ear and sex.
Method
Preexposure and postexposure measures of audiometric thresholds, DPOAEs, and ECochG indices were examined. Sixteen male and 16 female adults participated. Participants were exposed to a 2000-Hz narrowband noise presented at 105 dBA for 10 min.
Results
Following noise exposure, significantly (
p
< .0001) larger auditory threshold differences were observed for left ears. Larger auditory threshold differences were also observed for 3000 and 4000 Hz versus 2000 and 6000 Hz. DPOAE absolute amplitude differences increased with decreasing
L
1
,
L
2
level (
p
< .0001). DPOAE absolute amplitude differences also significantly rose with increasing f
2
frequencies (
p
< .0001). Females generally had larger DPOAE absolute amplitude differences than males (
p
< .05). Summating potential amplitudes were significantly larger for female left ears following noise exposure (
p
= .03). Left-ear summating potential/action potential amplitude ratios and summating potential/action potential area ratios were increased following noise exposure (
p
< .05).
Conclusions
Utilizing a test battery to examine the effects of short-term noise exposure can reveal the functional status of different structures in the cochlea. There appears to be a susceptibility of the left ear to short-term loud noise exposure. Findings with respect to a sex susceptibility to short-term loud noise exposure were not strong, as sex differences were only observed for a subset of the conditions.
Publisher
American Speech Language Hearing Association
Subject
Speech and Hearing,Linguistics and Language,Language and Linguistics
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. Retrieved from http://www.asha.org/policy
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