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Noise-induced threshold elevation as a function of peak sound pressure level

Grenner, Jan LU ; Nilsson, Per O L; Sheppard, Helen and Katbamna, Bharti (1990) In Hearing Research 46(1-2). p.161-169
Abstract
Thirty-three groups of guinea pigs, consisting of five animals in each group, were exposed to a simulated impact noise with peak levels ranging between 119.5 and 134.5 dB SPL. By varying the repetition rate, different equivalent levels could be set at each peak level. The equivalent levels ranged from 96 to 117 dB SPL, and the exposure duration was 1.5 to 24 hours. The compound action potential thresholds were measured in 1/3-octave steps between 1 and 20 kHz, one month after the exposure. Higher peak levels resulted in a peak-shaped threshold elevation with a maximum around 8 kHz. For constant peak levels, the equal energy theory was supported. For exposures of equal energy but different peak levels, significantly higher threshold... (More)
Thirty-three groups of guinea pigs, consisting of five animals in each group, were exposed to a simulated impact noise with peak levels ranging between 119.5 and 134.5 dB SPL. By varying the repetition rate, different equivalent levels could be set at each peak level. The equivalent levels ranged from 96 to 117 dB SPL, and the exposure duration was 1.5 to 24 hours. The compound action potential thresholds were measured in 1/3-octave steps between 1 and 20 kHz, one month after the exposure. Higher peak levels resulted in a peak-shaped threshold elevation with a maximum around 8 kHz. For constant peak levels, the equal energy theory was supported. For exposures of equal energy but different peak levels, significantly higher threshold elevations resulted after exposure to higher peak levels. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Acoustic trauma, Equal energy hypothesis, N1 threshold, Guinea pig
in
Hearing Research
volume
46
issue
1-2
pages
161 - 169
publisher
Elsevier
external identifiers
  • pmid:2380122
  • scopus:0025321908
ISSN
0378-5955
DOI
10.1016/0378-5955(90)90146-G
language
English
LU publication?
yes
id
7e2a1cb2-9c98-4290-b56f-82ab0cf0f2e8 (old id 1105177)
date added to LUP
2008-08-05 10:19:19
date last changed
2017-01-01 05:08:25
@article{7e2a1cb2-9c98-4290-b56f-82ab0cf0f2e8,
  abstract     = {Thirty-three groups of guinea pigs, consisting of five animals in each group, were exposed to a simulated impact noise with peak levels ranging between 119.5 and 134.5 dB SPL. By varying the repetition rate, different equivalent levels could be set at each peak level. The equivalent levels ranged from 96 to 117 dB SPL, and the exposure duration was 1.5 to 24 hours. The compound action potential thresholds were measured in 1/3-octave steps between 1 and 20 kHz, one month after the exposure. Higher peak levels resulted in a peak-shaped threshold elevation with a maximum around 8 kHz. For constant peak levels, the equal energy theory was supported. For exposures of equal energy but different peak levels, significantly higher threshold elevations resulted after exposure to higher peak levels.},
  author       = {Grenner, Jan and Nilsson, Per O L and Sheppard, Helen and Katbamna, Bharti},
  issn         = {0378-5955},
  keyword      = {Acoustic trauma,Equal energy hypothesis,N1 threshold,Guinea pig},
  language     = {eng},
  number       = {1-2},
  pages        = {161--169},
  publisher    = {Elsevier},
  series       = {Hearing Research},
  title        = {Noise-induced threshold elevation as a function of peak sound pressure level},
  url          = {http://dx.doi.org/10.1016/0378-5955(90)90146-G},
  volume       = {46},
  year         = {1990},
}