✦ LIBER ✦

Micromechanical Models for the Brownian Motion of Hair Cell Stereocilia

✍ Scribed by Wolfgang A. Svrcek-Seiler; Ilse C. Gebeshuber; Frank Rattay; Tamás S. Biro; Harald Markum

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 233 KB
Volume: 193
Category: Article
ISSN: 0022-5193
DOI: 10.1006/jtbi.1998.0729

No coin nor oath required. For personal study only.

✦ Synopsis

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.

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