Nonlinear dynamical motion of cellular structures in the cochlea

Conor Heneghan; Malvin C. Teich; Shyam M. Khanna; Mats Ulfendahl

doi:10.1117/12.162711

5 November 1993 Nonlinear dynamical motion of cellular structures in the cochlea

Conor Heneghan, Malvin C. Teich, Shyam M. Khanna, Mats Ulfendahl

Proceedings Volume 2036, Chaos in Biology and Medicine; (1993) https://doi.org/10.1117/12.162711
Event: SPIE's 1993 International Symposium on Optics, Imaging, and Instrumentation, 1993, San Diego, CA, United States

Abstract

The time course of the velocity of vibration was measured in individual sensory cells (outer hair cells and Hensen's cells from the third and fourth turns of a guinea-pig temporal-bone preparation) for a variety of applied acoustic stimuli. The methods of preparation and interferometric measurement have been described earlier. To observe the cell's response for a continuous and large range of acoustic intensities, an amplitude modulated tone with fixed modulation characteristics and a wide range of carrier frequencies f_c was used. The peak acoustic intensities of the applied tones were in excess of 90 dB:re .0002 dynes/cm², which is at the high intensity end of the hearing range of most mammals. A spectrogram was used to analyze the velocity response of the cell. This is a 3D representation that exhibits the time evolution of the amplitudes of all of the spectral components in the response.

Citation Download Citation

Conor Heneghan, Malvin C. Teich, Shyam M. Khanna, and Mats Ulfendahl "Nonlinear dynamical motion of cellular structures in the cochlea", Proc. SPIE 2036, Chaos in Biology and Medicine, (5 November 1993); https://doi.org/10.1117/12.162711

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