Experimental measurements of the otoacoustic emission (OAE) latency of adult subjects have been obtained, as a function of frequency, by means of wavelet time-frequency analysis based on the iterative application of filter banks. The results are in agreement with previous OAE latency measurements by Tognola et al. [Hear. Res. 106, 112-122 (1997)], as regards both the latency values and the frequency dependence, and seem to be incompatible with the steep I/f law that is predicted by scale-invariant full cochlear models. The latency-frequency relationship has been best fitted to a linear function of the cochlear physical distance, using the Greenwood map, and to an exponential function of the cochlear distance, for comparison with derived band ABR latency measurements. Two sets of ears [94 audiometrically normal and 42 impaired with high-frequency (f > 3 kHz) hearing loss] have been separately analyzed. Significantly larger average latencies were found in the impaired ears in the mid-frequency range. Theoretical implications of these findings on the transmission of the traveling wave are discussed. (C) 2002 Acoustical Society of America.

Sisto, R., & Moleti, A. (2002). On the frequency dependence of the otoacoustic emission latency in hypoacoustic and normal ears. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 111(1 I), 297-308 [10.1121/1.1428547].

On the frequency dependence of the otoacoustic emission latency in hypoacoustic and normal ears

MOLETI, ARTURO
2002

Abstract

Experimental measurements of the otoacoustic emission (OAE) latency of adult subjects have been obtained, as a function of frequency, by means of wavelet time-frequency analysis based on the iterative application of filter banks. The results are in agreement with previous OAE latency measurements by Tognola et al. [Hear. Res. 106, 112-122 (1997)], as regards both the latency values and the frequency dependence, and seem to be incompatible with the steep I/f law that is predicted by scale-invariant full cochlear models. The latency-frequency relationship has been best fitted to a linear function of the cochlear physical distance, using the Greenwood map, and to an exponential function of the cochlear distance, for comparison with derived band ABR latency measurements. Two sets of ears [94 audiometrically normal and 42 impaired with high-frequency (f > 3 kHz) hearing loss] have been separately analyzed. Significantly larger average latencies were found in the impaired ears in the mid-frequency range. Theoretical implications of these findings on the transmission of the traveling wave are discussed. (C) 2002 Acoustical Society of America.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
English
Con Impact Factor ISI
Acoustic variables measurement; Acoustic wave transmission; Wavelet transforms; Otoacoustic emission; Audition; acoustics; adult; article; audiometry; clinical article; cochlea; controlled study; frequency analysis; hearing loss; human; hypoacusis; male; otoacoustic emission; priority journal; sound transmission; Adult; Cochlea; Hearing Loss; Hearing Loss, Noise-Induced; Humans; Male; Models, Biological; Otoacoustic Emissions, Spontaneous
Sisto, R., & Moleti, A. (2002). On the frequency dependence of the otoacoustic emission latency in hypoacoustic and normal ears. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 111(1 I), 297-308 [10.1121/1.1428547].
Sisto, R; Moleti, A
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/45607
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