Sources and mechanisms of DPOAE generation: implications for the prediction of auditory sensitivity

Lauren A Shaffer; Robert H Withnell; Sumit Dhar; David J Lilly; Shawn S Goodman; Kelley M Harmon

doi:10.1097/01.AUD.0000090439.16438.9F

Back

Sources and mechanisms of DPOAE generation: implications for the prediction of auditory sensitivity

Journal article

Peer reviewed

Sources and mechanisms of DPOAE generation: implications for the prediction of auditory sensitivity

Lauren A Shaffer, Robert H Withnell, Sumit Dhar, David J Lilly, Shawn S Goodman and Kelley M Harmon

Ear and hearing, Vol.24(5), pp.367-379

10/2003

DOI: 10.1097/01.AUD.0000090439.16438.9F

PMID: 14534408

View Online

Abstract

Otoacoustic emissions (OAEs) have become a commonly used clinical tool for assessing cochlear health status, in particular, the integrity of the cochlear amplifier or motor component of cochlear function. Predicting hearing thresholds from OAEs, however, remains a research challenge. Models and experimental data suggest that there are two mechanisms involved in the generation of OAEs. For distortion product, transient, and high-level stimulus frequency emissions, the interaction of multiple sources of emissions in the cochlea leads to amplitude variation in the composite ear canal signal. Multiple sources of emissions complicate simple correlations between audiometric test frequencies and otoacoustic emission frequencies. Current research offers new methods for estimating the individual components of OAE generation. Input-output functions and DP-grams of the nonlinear component of the 2f2-f2 DPOAE may ultimately show better correlations with hearing thresholds. This paper reviews models of OAE generation and methods for estimating the contribution of source components to the composite emission that is recorded in the ear canal. The clinical implications of multiple source components are discussed.

Models, Theoretical

Otoacoustic Emissions, Spontaneous - physiology

Acoustic Stimulation

Humans

Auditory Threshold - physiology

Cochlea - physiology

Hair Cells, Auditory, Outer - physiology

Details

Title: Subtitle: Sources and mechanisms of DPOAE generation: implications for the prediction of auditory sensitivity
Creators: Lauren A Shaffer - Department of Speech and Hearing Sciences, Indiana University, Bloomington, IN, USA. lashaffer@bsu.edu
Robert H Withnell
Sumit Dhar
David J Lilly
Shawn S Goodman
Kelley M Harmon
Resource Type: Journal article
Publication Details: Ear and hearing, Vol.24(5), pp.367-379
DOI: 10.1097/01.AUD.0000090439.16438.9F
PMID: 14534408
NLM abbreviation: Ear Hear
ISSN: 0196-0202
eISSN: 1538-4667
Publisher: United States
Grant note: T32 DC00012 / NIDCD NIH HHS R03 DC 04921-01A1 / NIDCD NIH HHS
Language: English
Date published: 10/2003
Academic Unit: Communication Sciences and Disorders
Record Identifier: 9984002356802771

Metrics

29 Record Views

75 Times Cited - Web of Science