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Titolo:
CONTRIBUTIONS OF TEMPORAL ANALYSIS OF TRA NSIENT EVOKED OTOACOUSTIC EMISSIONS TO THE IDENTIFICATION OF THEIR SOURCES
Autore:
AVAN P; WIT HP;
Indirizzi:
UNIV AUVERGNE,FAC MED,BIOPHYS LAB,BP 38 F-63001 CLERMONT FERRAND FRANCE UNIV GRONINGEN HOSP,INST AUDIOL 9700 RB GRONINGEN NETHERLANDS
Titolo Testata:
Journal de physique. IV
fascicolo: C5, volume: 4, anno: 1994,
parte:, 1
pagine: 403 - 406
SICI:
1155-4339(1994)4:C5<403:COTAOT>2.0.ZU;2-D
Fonte:
ISI
Lingua:
FRE
Soggetto:
ACOUSTIC EMISSIONS; SUPPRESSION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
10
Recensione:
Indirizzi per estratti:
Citazione:
P. Avan e H.P. Wit, "CONTRIBUTIONS OF TEMPORAL ANALYSIS OF TRA NSIENT EVOKED OTOACOUSTIC EMISSIONS TO THE IDENTIFICATION OF THEIR SOURCES", Journal de physique. IV, 4(C5), 1994, pp. 403-406

Abstract

Transient-evoked otoacoustic emissions (t-EOE) are of growing importance in clinical routine as an objective tool for screening hearing losses due to cochlear dysfunction. For this purpose, their presence or absence is thought to be a reliable criterion. Apart from such applications, the question of their generation and propagation in a normal or impaired cochlea remains challenging. In particular, it seems that several of their properties are sensitive to the status of the whole cochlea, thus if it was confirmed, it would not be straightforward to predict the alterations of t-EOE components as a function of audiometric data, and the reverse would be even more delicate. The goal of this work was to substantiate the hypothesis that t-EOE properties depend the whole cochlear status by analysing their temporal patterns in human ears, with either irreversible audiometric alterations attributed to noise-induced hearing loss, or reversible changes in basal cochlear function produced by high-frequency masking tones. The temporal patterns examined by wavelet analysis were conspicuously dependent on the cochlear status at high frequencies. In the first experiment (NIHL), EOE patterns enabled to predict whether or not the audiogram was normal around8 kHz. With high-frequency masking, very complex changes in temporal patterns were observed. These results suggest that EOE and hearing loss are correlated in a complex manner.

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Documento generato il 02/12/20 alle ore 14:57:42