Estimation of cochlear response times using lateralization of frequency-mismatched tones

Olaf Strelcyk, Torsten Dau

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Abstract

Behavioral and objective estimates of cochlear response times CRTs and traveling-wave TW velocity were compared for three normal-hearing listeners. Differences between frequency-specific CRTs were estimated via lateralization of pulsed tones that were interaurally mismatched in frequency, similar to a paradigm proposed by Zerlin 1969. J. Acoust. Soc. Am. 46, 1011–1015. In addition, derived-band auditory brainstem responses were obtained as a function of derived-band center frequency. The latencies extracted from these responses served as objective estimates of CRTs. Estimates of TW velocity were calculated from the obtained CRTs. The correspondence between behavioral and objective estimates of CRT and TW velocity was examined. For frequencies up to 1.5 kHz, the behavioral method yielded reproducible results, which were consistent with the objective estimates. For higher frequencies, CRT differences could not be estimated with the behavioral method due to limitations of the lateralization paradigm. The method might be useful for studying the spatiotemporal cochlear response pattern in human listeners.
Original languageEnglish
JournalAcoustical Society of America. Journal
Volume126
Issue number3
Pages (from-to)1302-1311
ISSN0001-4966
DOIs
Publication statusPublished - 2009

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Copyright 2009. Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.

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