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Hear Res. 1984 Dec;16(3):271-8.

Interactions among spontaneous otoacoustic emissions. I. Distortion products and linked emissions.

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Department of Audiology and Speech Sciences, Purdue University, West Lafayette, IN 47907.


Spontaneous otoacoustic emissions (SOAEs) can be recorded from human ears with a sensitive microphone in the ear canal. The evidence to date strongly indicates that the origin of these emissions in an active electro-mechanical process at the basilar membrane level. In this report we present data on interactions among SOAEs in ears with multiple SOAEs, including: intermodulation distortion products, mutual suppression, and noncontiguous-linked SOAEs which apparently share energy between two quasi-stable states. These results demonstrate the highly nonlinear and extremely complex nature of the active process, and present a challenge for mathematical modeling of the mechanisms involved.

[Indexed for MEDLINE]

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