The University of Southampton
University of Southampton Institutional Repository

Nonlinear temporal interactions in click-evoked otoacoustic emissions. II. Experimental data

Kapadia, S. and Lutman, M.E. (2000) Nonlinear temporal interactions in click-evoked otoacoustic emissions. II. Experimental data Hearing Research, 146, (1-2), pp. 101-120. (doi:10.1016/S0378-5955(00)00103-9).

Record type: Article


Click-evoked otoacoustic emissions (CEOAEs) are reduced in amplitude by the presentation of ‘suppressor’ clicks that either closely lead or follow the stimulus (‘test’) clicks. A model described in a companion paper (Kapadia and Lutman, Hear. Res. 146 (2000) 89–100) shows that such nonlinear temporal interactions, as previously reported, may be explained in terms of the compressive non-linearity of the CEOAE input–output (I–O) function. This paper presents the results of a detailed parametric investigation into such nonlinear interactions, studied in 12 normal adult ears over a wide range of test and suppressor click levels and inter-click intervals. The results differ from those generated by the model in a number of respects. Principally, maximum suppression is generally obtained for suppressors presented in advance of test clicks, rather than co-incident with the test clicks. The amount of advance depends systematically on the two click levels. The measured suppression can also exceed the theoretical maximum allowed by the model. It is concluded that the nonlinear temporal interactions measured do not simply reflect CEOAE I–O function non-linearity. They may, instead, arise from disturbance of the generator elements from their resting state prior to generation of the CEOAE. These results may also have general implications relating to cochlear responses to transient stimuli and indicate the potential of CEOAEs in probing aspects of cochlear mechanics.

Full text not available from this repository.

More information

Published date: 2000
Keywords: otoacoustic emission, nonlinear interaction, model, inter-click interval, cochlear mechanics, click response
Organisations: Human Sciences Group


Local EPrints ID: 10486
ISSN: 0378-5955
PURE UUID: d6f5944f-1ea4-4f6e-a1be-762eb7729da9

Catalogue record

Date deposited: 16 Jun 2005
Last modified: 17 Jul 2017 17:06

Export record



Author: S. Kapadia
Author: M.E. Lutman

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.