AP threshold elevation in the guinea pig following exposure to a broadband noise
(1989) In Journal of the Acoustical Society of America 86(6). p.2223-2228- Abstract
- Sixty guinea pigs were exposed to a steady-state broadband noise with a falling frequency spectrum. The sound-pressure level was varied between 96 and 117 dB SPL, and the duration of the exposure was varied from 3 to 12 h. After 4-5 weeks, the auditory thresholds were determined by electrocochleography at 14 frequencies, and the results were compared with a control group. With increasing sound-pressure level, the thresholds became elevated at all frequencies. The maximum threshold elevation also exhibited a slight shift toward higher frequencies. With increasing exposure time, the threshold elevations increased and shifted into the high-frequency region, whereas the low-frequency region was less affected. Linear regression analysis showed... (More)
- Sixty guinea pigs were exposed to a steady-state broadband noise with a falling frequency spectrum. The sound-pressure level was varied between 96 and 117 dB SPL, and the duration of the exposure was varied from 3 to 12 h. After 4-5 weeks, the auditory thresholds were determined by electrocochleography at 14 frequencies, and the results were compared with a control group. With increasing sound-pressure level, the thresholds became elevated at all frequencies. The maximum threshold elevation also exhibited a slight shift toward higher frequencies. With increasing exposure time, the threshold elevations increased and shifted into the high-frequency region, whereas the low-frequency region was less affected. Linear regression analysis showed that the average threshold elevation between 1 and 20 kHz did not deviate from that predicted by the equal-energy hypothesis. However, the high-frequency loss at 5-20 kHz was very dependent on the exposure time, whereas the 1- to 4-kHz loss was not. There was no sign of any critical intensity with sudden increments in threshold elevation. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1104592
- author
- Grenner, Jan LU ; Nilsson, Per and Katbamna, Bharti
- organization
- publishing date
- 1989
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of the Acoustical Society of America
- volume
- 86
- issue
- 6
- pages
- 2223 - 2228
- publisher
- American Institute of Physics (AIP)
- external identifiers
-
- pmid:2600311
- scopus:0024789774
- ISSN
- 1520-8524
- DOI
- 10.1121/1.398483
- language
- English
- LU publication?
- yes
- id
- e64e9b64-03d8-428e-bebd-f577ea678ad0 (old id 1104592)
- date added to LUP
- 2016-04-01 16:47:15
- date last changed
- 2021-01-03 04:19:59
@article{e64e9b64-03d8-428e-bebd-f577ea678ad0,
abstract = {{Sixty guinea pigs were exposed to a steady-state broadband noise with a falling frequency spectrum. The sound-pressure level was varied between 96 and 117 dB SPL, and the duration of the exposure was varied from 3 to 12 h. After 4-5 weeks, the auditory thresholds were determined by electrocochleography at 14 frequencies, and the results were compared with a control group. With increasing sound-pressure level, the thresholds became elevated at all frequencies. The maximum threshold elevation also exhibited a slight shift toward higher frequencies. With increasing exposure time, the threshold elevations increased and shifted into the high-frequency region, whereas the low-frequency region was less affected. Linear regression analysis showed that the average threshold elevation between 1 and 20 kHz did not deviate from that predicted by the equal-energy hypothesis. However, the high-frequency loss at 5-20 kHz was very dependent on the exposure time, whereas the 1- to 4-kHz loss was not. There was no sign of any critical intensity with sudden increments in threshold elevation.}},
author = {{Grenner, Jan and Nilsson, Per and Katbamna, Bharti}},
issn = {{1520-8524}},
language = {{eng}},
number = {{6}},
pages = {{2223--2228}},
publisher = {{American Institute of Physics (AIP)}},
series = {{Journal of the Acoustical Society of America}},
title = {{AP threshold elevation in the guinea pig following exposure to a broadband noise}},
url = {{http://dx.doi.org/10.1121/1.398483}},
doi = {{10.1121/1.398483}},
volume = {{86}},
year = {{1989}},
}