Micromechanical models for the Brownian motion of hair cell stereocilia

Wolfgang A. Svrcek-Seiler, Ilse C. Gebeshuber, Frank Rattay, Tamás S. Biro, Harald Markum

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Brownian motion of the hairs (stereocilia) of amphibian hair cells has been shown in experiments to be in the range of some nm. Our models of the Brownian motion of coupled harmonic oscillators with mechanical properties of stereocilia lead to similar displacements. Computer simulation shows that stochastic fluctuations enhance the encoding of low level acoustic signals. Stochastic resonance lowers the detection threshold of auditory signals to amplitudes one order of magnitude lower than that of the Brownian motion.

Original languageEnglish
Pages (from-to)623-630
Number of pages8
JournalJournal of Theoretical Biology
Volume193
Issue number4
DOIs
Publication statusPublished - Aug 21 1998

ASJC Scopus subject areas

  • Statistics and Probability
  • Modelling and Simulation
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Agricultural and Biological Sciences(all)
  • Applied Mathematics

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