Inverse-solution method for a class of non-classical cochlear models

Egbert De Boer, Alfred Nuttall

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Measurements of distortion-product (DP) waves inside the cochlea have led to a conception of wave propagation that is at variance with the "classical" attitude. Of the several alternatives that have been proposed to remedy this situation, the feed-forward model could be a promising one. This paper describes a method to apply the inverse solution with the aim to attain a feed-forward model that accurately reproduces a measured response. It is demonstrated that the computation method is highly successful. Subsequently, it is shown that in a feed-forward model a DP wave generated by a two-tone stimulus is almost exclusively a forward-traveling wave which property agrees with the nature of the experimental findings. However, the amplitude of the computed DP wave is only substantial in the region where the stimulation patterns of the two primary tones overlap. In addition, the model developed cannot explain coherent reflection for single tones. It has been suggested that a forward transversal DP wave induced by a (retrograde) compression wave could be involved in DP wave generation. This topic is critically evaluated.

Original languageEnglish (US)
Pages (from-to)2146-2154
Number of pages9
JournalJournal of the Acoustical Society of America
Volume125
Issue number4
DOIs
StatePublished - 2009

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products
compression waves
cochlea
wave generation
stimulation
traveling waves
stimuli
wave propagation
Waves

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

Cite this

Inverse-solution method for a class of non-classical cochlear models. / De Boer, Egbert; Nuttall, Alfred.

In: Journal of the Acoustical Society of America, Vol. 125, No. 4, 2009, p. 2146-2154.

Research output: Contribution to journalArticle

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