Consiglio Nazionale delle Ricerche

Tipo di prodottoArticolo in rivista
TitoloFrequency-specific information from click evoked otoacoustic emissions in noise-induced hearing loss
Anno di pubblicazione1999
FormatoCartaceo
Autore/iTognola, G; Grandori, F; Avan, P; Ravazzani, P; Bonfils, P
Affiliazioni autoriCNR, Ctr Biomed Engn, I-20133 Milan, Italy Sch Med, Lab Sensory Biophys, Clermont Ferrand, France Hosp Boucicaut, CNRS, UPRESA, Paris, France Hosp Boucicaut, ENT Dept, Paris, France
Autori CNR e affiliazioni
  • FERDINANDO GRANDORI
  • PAOLO GIUSEPPE RAVAZZANI
  • GABRIELLA TOGNOLA
Lingua/e
  • inglese
AbstractClick evoked otoacoustic emissions (CEOAEs), pure-tone audiograms (PTAs), and Bekesy sweep frequency audiograms were recorded from 15 ears of 11 subjects with noise-induced hearing loss. For all ears, hearing threshold levels >= 30 dB HL were found at the high frequencies. The aims of the study were to examine whether the decomposition of CEOAEs into narrow band components could identify hearing loss in a frequency-specific manner and to what extent audiometric thresholds could be predicted. CEOAEs were parcelled into 0.5-kHz-wide components by means of the wavelet transform. Reproducibility of CEOAE components was compared with audiometric threshold at corresponding frequencies. A general trend of low reproducibility for increasing audiometric thresholds was found. A reproducibility value of 60 per cent was found to best separate normal and elevated thresholds. The presence of a CEOAE component at a given frequency was always associated with audiometric thresholds <= 20-25 dB HL. On the other hand, the absence of a component was equally associated either with normal or abnormal hearing levels. Large inter-subject variability was observed. A weak linear relationship was found between reproducibility and audiometric thresholds at corresponding frequencies, indicating that analysis of narrow band CEOAE components is valuable for separating normal from hearing-impaired ears but cannot replace the audiogram.
Lingua abstractinglese
Altro abstract-
Lingua altro abstract-
Pagine da243
Pagine a250
Pagine totali-
RivistaAudiology
Attiva dal 1971
Editore: Karger - Basel
Paese di pubblicazione: Svizzera
Lingua: multilingue
ISSN: 0020-6091
Titolo chiave: Audiology
Titolo proprio: Audiology.
Titolo abbreviato: Audiology
Titolo alternativo: Audiologie
Numero volume della rivista38
Fascicolo della rivista5
DOI-
Verificato da referee-
Stato della pubblicazione-
Indicizzazione (in banche dati controllate)
  • ISI Web of Science (WOS) (Codice:000083252400002)
Parole chiaveWavelet transform; Click evoked otoacoustic emissions (CEOAE); Narrow band components; Sensorineural hearing loss
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Strutture CNR
  • IEIIT — Istituto di elettronica e di ingegneria dell'informazione e delle telecomunicazioni
  • ISIB — ISIB - Milano
Moduli CNR
    Progetti Europei-
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