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Updated: Feb 14, 2026

Patch Clamp Recordings in Inner Ear Hair Cells Isolated from Zebrafish
Published on: October 17, 2012
Chaotic Dynamics of Inner Ear Hair Cells
Justin Faber1, Dolores Bozovic2,3
1Department of Physics & Astronomy, University of California, Los Angeles, California, 90095, USA.
Abstract:
Experimental records of active bundle motility are used to demonstrate the presence of a low-dimensional chaotic attractor in hair cell dynamics. Dimensionality tests from dynamic systems theory are applied to estimate the number of independent variables sufficient for modelling the hair cell response. Poincaré maps are constructed to observe a quasiperiodic transition from chaos to order with increasing amplitudes of mechanical forcing. The onset of this transition is accompanied by a reduction of Kolmogorov entropy in the system and an increase in transfer entropy between the stimulus and the hair bundle, indicative of signal detection. A simple theoretical model is used to describe the observed chaotic dynamics. The model exhibits an enhancement of sensitivity to weak stimuli when the system is poised in the chaotic regime. We propose that chaos may play a role in the hair cell's ability to detect low-amplitude sounds.
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