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Titolo:
The relationship between auditory threshold and evoked otoacoustic emissions
Autore:
Wagner, W; Plinkert, PK;
Indirizzi:
Univ Tubingen, Dept Otorhinolaryngol, D-72076 Tubingen, Germany Univ Tubingen Tubingen Germany D-72076 ryngol, D-72076 Tubingen, Germany
Titolo Testata:
EUROPEAN ARCHIVES OF OTO-RHINO-LARYNGOLOGY
fascicolo: 4, volume: 256, anno: 1999,
pagine: 177 - 188
SICI:
0937-4477(199904)256:4<177:TRBATA>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
SENSORINEURAL HEARING-LOSS; ACOUSTIC-DISTORTION PRODUCTS; CLINICAL UTILITY; IMPAIRED EARS; HAIR-CELLS; HUMANS; SENSITIVITY; DYSFUNCTION; RESPONSES; INFANTS;
Keywords:
otoacoustic emissions; distortion product emissions; hearing loss; audiometric configurations;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Clinical Medicine
Citazioni:
51
Recensione:
Indirizzi per estratti:
Indirizzo: Plinkert, PK Univnyubingen, Dept Otorhinolaryngol, Silcherstr 5, D-72076 Tubingen, Germa Univ Tubingen Silcherstr 5 Tubingen Germany D-72076 n, Germa
Citazione:
W. Wagner e P.K. Plinkert, "The relationship between auditory threshold and evoked otoacoustic emissions", EUR ARCH OT, 256(4), 1999, pp. 177-188

Abstract

The aim of this study was to compare transiently evoked otoacoustic emissions (TEOAE) and distortion product otoacoustic emissions (DPOAE) in normal hearing ears (II = 44) and ears with cochlear hearing loss (HL) to obtain defined data on qualitative and quantitative correlations. In addition, we wanted to determine the reliability with which a clinical examiner could predict a typical, idealized audiometric configuration from TEOAE measurements. In the hearing-impaired subjects (n = 149), a 50% reduction of OAE incidence was caused by a mean HL of 10.5 dB for TEOAE compared to 27 dB SPL for DPOAE. A 90% incidence reduction was found at a mean threshold elevation of33 dB for TEOAE and 51 dB for DPOAE. Correlation between TEOAE amplitudes and HL was in general rather low (r = -0.1 to -0.5), while DPOAE amplitudesshowed a slightly better correlation with HL (I = -0.3 to -0.6). In general, efforts to derive an audiogram from evoked OAE have been more promising for DPOAE than for TEOAE. However, our studies showed that approximately 40% of the ears with HL could be categorized correctly into one of five typical audiometric patterns from TEOAE measurements. Additionally, a cochlear HL in or near the medium frequency range was much more likely to cause a reduction in TEOAE than an isolated low- or high-frequency lesion. Accordingly, TEOAE were often preserved in ears with isolated HL in the high or low frequencies.

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Documento generato il 01/12/20 alle ore 16:45:42