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

Sensitivity of distortion product otoacoustic emissions in noise-exposed chinchillas.

Authors
Davis-B; Qiu-W; Hamernik-RP
Source
J Am Acad Audiol 2005 Feb; 16(2):69-78
NIOSHTIC No.
20028793
Abstract
The present study investigates the effect of small amounts of outer hair cell (OHC) loss on distortion product otoacoustic emission (DPOAE) levels and evoked potential permanent threshold shifts (PTS) in a population of 12 noise-exposed chinchillas. The group mean DPOAE level, which decreased by up to approximately 15 dB in the presence of less than 8 dB PTS and 15% OHC loss, indicates that DPOAEs can detect an underlying cochlear pathology (i,e., OHC damage/loss) despite the presence of normal to near normal thresholds. The sensitivity of DPOAEs in detecting OHC loss makes this test measure suited for diagnosing sensorineural hearing impairment, particularly when abnormal auditory symptoms (i.e., speech discrimination problems) are associated with a normal audiogram in the clinical setting and as part of a hearing conservation program.
Keywords
Noise-exposure; Animals; Animal-studies; Threshold-limit-values; Hearing-impairment; Hearing-conservation; Sensitivity-testing; Auditory-system; Hearing-threshold
CODEN
JAAAE3
Publication Date
20050201
Document Type
Journal Article
Email Address
Robert.Davis@plattsburgh.edu
Funding Amount
2829511
Funding Type
Grant
Fiscal Year
2005
NTIS Accession No.
NTIS Price
Identifying No.
Grant-Number-R01-OH-002317
Issue of Publication
2
ISSN
1050-0545
Source Name
Journal of the American Academy of Audiology
State
NY
Performing Organization
State University of New York at Buffalo, Buffalo, New York
TOP