Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
DISTORTION-PRODUCT OTOACOUSTIC EMISSIONS AND SENSORINEURAL HEARING-LOSS
Autore:
MOULIN A; BERA JC; COLLET L;
Indirizzi:
UNIV LYON 1,HOP EDOUARD HERRIOT,PHYSIOL SENSORIELLE AUDIT & VOIX LAB,CNRS,UA 1447,PAVILLON U 3 F-69003 LYON FRANCE CTR HOSP LYON SUD,PHYSIOL SENSORIELLE LAB F-69310 PIERRE BENITE FRANCE
Titolo Testata:
Audiology
fascicolo: 6, volume: 33, anno: 1994,
pagine: 305 - 326
SICI:
0020-6091(1994)33:6<305:DOEASH>2.0.ZU;2-U
Fonte:
ISI
Lingua:
ENG
Soggetto:
STIMULATED ACOUSTIC EMISSIONS; NORMALLY-HEARING; HUMAN EARS; PHYSIOLOGICAL VULNERABILITY; AUDITORY-SENSITIVITY; MUTANT MICE; 2F1-F2; AUDIOGRAM; FREQUENCY; BEHAVIOR;
Keywords:
ACOUSTIC DISTORTION PRODUCTS; OTOACOUSTIC EMISSIONS; SENSORINEURAL HEARING LOSS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Science Citation Index Expanded
Citazioni:
58
Recensione:
Indirizzi per estratti:
Citazione:
A. Moulin et al., "DISTORTION-PRODUCT OTOACOUSTIC EMISSIONS AND SENSORINEURAL HEARING-LOSS", Audiology, 33(6), 1994, pp. 305-326

Abstract

As other types of otoacoustic emissions, distortion product otoacoustic emissions (DPOAEs) allow the exploration of the active cochlear mechanisms known to take place in the outer hair cell system. Most authors consider that 2f1-f2 DPOAEs are generated in a cochlear region corresponding to the geometric mean (GM) of the primary frequencies. To verify the relevance of this hypothesis in clinical practice, DPOAEs wererecorded at seven different frequencies, ranging from 0.5 to 4 kHz, in 81 hearing-impaired patients and in 24 normally hearing subjects. Totest the hypothesis that DPOAEs reflect the hearing threshold at the frequency of the GM rather than at the 2f1-f2 frequency, this study compares the 2f1-f2 frequency and the GM of the primaries to the frequency of hearing loss. DPOAEs can be used to explore a large range of frequencies, especially at high frequencies, but responses at low frequencies are less reliable due to noise contamination. Secondly, DPOAEs can be recorded in ears that have a hearing threshold as high as 65 dB HL at the frequency corresponding to the GM of the primaries. Finally, DPOAE recordings show frequency specificity: i.e., hearing loss at a specific frequency correlates best with DPOAEs whose GM of primary frequencies corresponds to the frequency of the hearing loss. However, this frequency specificity is still unsatisfactory and decreases as the levels of primaries increase above 60 dB SPL. Moreover, DPOAE amplitudeis too variable to predict hearing loss at a particular frequency, whereas DPOAE threshold allows a correct prediction of abnormal auditorythreshold in more than 80% of the cases at frequencies above 1 kHz.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 15:48:41