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Action potential threshold elevation in the guinea-pig as a function of impact noise exposure energy

Grenner, Jan LU ; Nilsson, P; Sheppard, H and Katbamna, B (1988) In Audiology 27(6). p.356-366
Abstract
Eighteen groups of guinea pigs were exposed to a simulated impact noise for periods of 1.5-24 h. The peak level was kept constant at 131.5 dB and the repetition rate was varied to give seven different equivalent levels (Leq) between 96 and 117 dB. The auditory thresholds were assessed by electrocochleography after 1 month and compared with those of a control group. Significant damage occurred even at the lowest exposure energy used. When the total exposure energy was expressed on a decibel scale, the threshold elevation (1-10 kHz) increased 1.07 dB for each decibel increase in the exposure energy, regardless of the combination of Leq and exposure time. The results of the study thus support the equal-energy hypothesis under these conditions.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Impact noise, Threshold shift, Equal-energy hypothesis
in
Audiology
volume
27
issue
6
pages
356 - 366
publisher
Karger
external identifiers
  • pmid:3240133
  • scopus:0023733511
ISSN
0020-6091
DOI
10.3109/00206098809081606
language
English
LU publication?
yes
id
6876998e-9378-4da1-9e80-2c35dfefb405 (old id 1104202)
date added to LUP
2008-08-07 12:01:07
date last changed
2017-01-01 07:27:31
@article{6876998e-9378-4da1-9e80-2c35dfefb405,
  abstract     = {Eighteen groups of guinea pigs were exposed to a simulated impact noise for periods of 1.5-24 h. The peak level was kept constant at 131.5 dB and the repetition rate was varied to give seven different equivalent levels (Leq) between 96 and 117 dB. The auditory thresholds were assessed by electrocochleography after 1 month and compared with those of a control group. Significant damage occurred even at the lowest exposure energy used. When the total exposure energy was expressed on a decibel scale, the threshold elevation (1-10 kHz) increased 1.07 dB for each decibel increase in the exposure energy, regardless of the combination of Leq and exposure time. The results of the study thus support the equal-energy hypothesis under these conditions.},
  author       = {Grenner, Jan and Nilsson, P and Sheppard, H and Katbamna, B},
  issn         = {0020-6091},
  keyword      = {Impact noise,Threshold shift,Equal-energy hypothesis},
  language     = {eng},
  number       = {6},
  pages        = {356--366},
  publisher    = {Karger},
  series       = {Audiology},
  title        = {Action potential threshold elevation in the guinea-pig as a function of impact noise exposure energy},
  url          = {http://dx.doi.org/10.3109/00206098809081606},
  volume       = {27},
  year         = {1988},
}