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Phys Rev Lett. 2000 May 29;84(22):5232-5.

Essential nonlinearities in hearing.

Author information

1
Instituto Mediterráneo de Estudios Avanzados IMEDEA (CSIC-UIB), E-07071 Palma de Mallorca, Spain.

Abstract

Our hearing organ, the cochlea, evidently poises itself at a Hopf bifurcation to maximize tuning and amplification. We show that in this condition several effects are expected to be generic: compression of the dynamic range, infinitely sharp tuning at zero input, and generation of combination tones. These effects are "essentially" nonlinear in that they become more marked the smaller the forcing: there is no audible sound soft enough not to evoke them. All the well-documented nonlinear aspects of hearing therefore appear to be consequences of the same underlying mechanism.

PMID:
10990910
DOI:
10.1103/PhysRevLett.84.5232
[Indexed for MEDLINE]

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