| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Auditory Hopf Amplification Revealed by an Energy Method |
| Lin Tian, Zhang-Cai Long** |
Colleague of Physics, Huazhong University of Science and Technology, Wuhan 430074
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| Cite this article: |
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Lin Tian, Zhang-Cai Long 2017 Chin. Phys. Lett. 34 048702 |
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Abstract We report on the auditory Hopf amplification contributed by the electrical energy of the hair cell during its bundle deflecting. An energy method to calculate the active force is adopted according to the electrical energy consumption of the hair cell. After some experimental data was analyzed and simulated, we find that the electrical energy determines the value of the active force and enlarges the mechanical response of the hair bundle. This amplification is controlled by the cell voltage and makes the sensor a Hopf vibrator with hearing nonlinear characteristics. A velocity-dependent active force derived previously from the force-gating channel operation strongly reinforces our conclusion.
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Received: 11 December 2016
Published: 21 March 2017
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| PACS: |
87.15.A-
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(Theory, modeling, and computer simulation)
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87.16.A-
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(Theory, modeling, and simulations)
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87.19.lt
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(Sensory systems: visual, auditory, tactile, taste, and olfaction)
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos 11374118 and 90820001, and the Science Foundation of Hubei Province under Grant No 2013CFB289. |
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