Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Auditory fatigue: retrocochlear components.

Authors
Salvi-R; Hamernik-D
Source
Science 1975 Oct; 190(4213):486-487
NIOSHTIC No.
00190480
Abstract
Measurements of auditory sensitivity were taken at the VIII nerve, cochlear nucleus, and inferior colliculus following a fatiguing sound exposure in chinchillas. Each animal was exposed to a standard temporary threshold shift (TTS) producing a tone of 8 minutes in duration at 95 decibels sound pressure level near the tympanic membrane. The exposure was at a frequency between 0.4 and 8.0 kilohertz. In the first experiment the auditory evoked response of the chinchillas was recorded from a chronic electrode placed over the rudimentary tentorium. In the second experiment the VIII nerve action potential and neurons from the cochlear nucleus were measured from anesthetized and tracheotomized chinchillas. In the third study the single units from the contralateral inferior colliculus were studied. The measurements indicated that low level, short duration sound exposures produced a progressively larger loss in sensitivity from peripheral to central auditory sites. These results suggested that there is a retrocochlear component to TTS. The authors conclude that different TTS exposures are likely to produce different physiological changes even though the final behavioral measurement of TTS is the same.
Keywords
NIOSH-Publication; NIOSH-Grant; Noise-induced-hearing-loss; Hearing-threshold; Sensory-thresholds; Noise-exposure; Laboratory-animals
Contact
Otolaryngology Upstate Medical Center Departm 750 E Adams Street Syracuse, N Y 13210
CODEN
SCIEAS
Publication Date
19751031
Document Type
Journal Article
Funding Amount
651569
Funding Type
Grant
Fiscal Year
1976
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-00364
Issue of Publication
4213
ISSN
0036-8075
Priority Area
Noise-induced-hearing-loss
Source Name
Science
State
NY
Performing Organization
Upstate Medical Center, Syracuse, New York
TOP