Verhulst, Sarah, Shera, Christopher A., Harte, James M. and Dau, Torsten (2011) Can a static nonlinearity account for the dynamics of otoacoustic emission suppression? In: 11th International Mechanics of Hearing Workshop, Williamstown, MA, U.S.A., Jul 16-22 2011. Published in: What Fire is in Mine Ears: Progress in Auditory Biomechanics, Proceedings of the 11th International Mechanics of Hearing Workshop, Vol.1403 pp. 257-263. doi:10.1063/1.3658095 ISSN 0094-243X.

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Abstract

This study investigates whether time‐dependent compression mechanisms in the cochlea are necessary to explain dynamic properties of otoacoustic emissions (OAEs). Dynamic properties of click‐evoked OAEs (CEOAEs) have been observed in temporal suppression; the effect where the CEOAE magnitude is reduced when a click is presented less than 10 ms before the test click. A time‐domain model of the cochlea that represented the basilar membrane (BM) as a cascade of coupled bandpass filters was used to investigate the cochlear origin of temporal suppression in CEOAEs. The model, implemented with a time‐invariant nonlinearity, was able to simulate temporal suppression, but was unable to account for the exact time scale and magnitude of the effect. The results suggest that temporal overlap of BM impulse responses can account for suppression in CEOAEs, but that an additional time‐dependent cochlear gain mechanism may be needed to account the high suppression maxima at inter‐click intervals larger than zero.

Item Type:	Conference Item (Paper)
Subjects:	Q Science > QP Physiology R Medicine > RF Otorhinolaryngology T Technology > TA Engineering (General). Civil engineering (General)
Divisions:	Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group)
Journal or Publication Title:	What Fire is in Mine Ears: Progress in Auditory Biomechanics, Proceedings of the 11th International Mechanics of Hearing Workshop
Publisher:	American Institute of Physics
ISSN:	0094-243X
Official Date:	2011
Dates:	Date Event 2011 Published
Volume:	Vol.1403
Page Range:	pp. 257-263
DOI:	10.1063/1.3658095
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Open Access (Creative Commons)
Conference Paper Type:	Paper
Title of Event:	11th International Mechanics of Hearing Workshop
Type of Event:	Workshop
Location of Event:	Williamstown, MA, U.S.A.
Date(s) of Event:	Jul 16-22 2011

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