Comparison of nonlinear mammalian cochlear-partition models

Robert Szalai*, Dáibhid Ó Maoiléidigh, Helen J Kennedy, Nigel Cooper, Alan R Champneys, Martin E Homer

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

16 Citations (Scopus)

Abstract

Various simple mathematical models of the dynamics of the organ of Corti in the mammalian cochlea are analysed and their dynamics compared. The specific models considered are: phenomenological Hopf and cusp normal forms, a recently-proposed description combining active hair-bundle motility and somatic motility, a reduction thereof, and finally a model highlighting the importance of the coupling between the nonlinear transduction current and somatic motility. The overall conclusion is that precise tuning to any bifurcation is not necessary for a compressively nonlinear response over a range similar to experimental observations and that the normal form of the Hopf bifurcation is not the only description that reproduces compression and tuning similar to experiment.
Original languageEnglish
Pages (from-to)323-336
Number of pages14
JournalJournal of the Acoustical Society of America
Volume133
Issue number1
DOIs
Publication statusPublished - Jan 2013

Keywords

  • HAIR-BUNDLE MOTILITY
  • BASILAR-MEMBRANE
  • TECTORIAL MEMBRANE
  • MECHANICS
  • CELLS
  • AMPLIFICATION
  • SUPPRESSION
  • RESPONSES
  • ORIGIN
  • TONES

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