Hopf Amplification Originated from the Force-Gating Channels of Auditory Hair Cells

doi:10.1088/0256-307X/33/12/128701

Chin. Phys. Lett.

2016, Vol. 33

Issue (12): 128701 DOI: 10.1088/0256-307X/33/12/128701

CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY

Hopf Amplification Originated from the Force-Gating Channels of Auditory Hair Cells

Lin Tian^1†, Yan-Ping Zhang^2†, Zhang-Cai Long^1**

¹College of Physics, Huazhong University of Science and Technology, Wuhan 430074
²Affiliated Hospital, Huahzong University of Science and Technology, Wuhan 430074

Cite this article:

Lin Tian, Yan-Ping Zhang, Zhang-Cai Long 2016 Chin. Phys. Lett. 33 128701

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Abstract The sense of mammalian hearing exhibits nonlinear phenomena which are most significant to hearing function, such as nonlinear dynamic compression, nonlinear tuning and combination tones. These nonlinear phenomena are suggested to originate from the Hopf amplification within the cochlea, while the mechanism underlying the Hopf amplification remains elusive. According to the experimental results of force-gating channel operation in hair cells, through a theoretic model, this work reveals a velocity-dependent open probability of force-gating channels in auditory hair cells, and a velocity-dependent active force produced by the force-gating channel operating, which makes sensors hear typical Hopf vibrators with nonlinear hearing phenomena.

Received: 02 August 2016 Published: 29 December 2016

PACS:	87.19.lt	(Sensory systems: visual, auditory, tactile, taste, and olfaction)
	43.64.Ld	(Physiology of hair cells)
	43.66.Ba	(Models and theories of auditory processes)

Fund: Supported by the National Natural Science Foundation of China under Grant No 11374118, and the Science Foundation of Hubei Province under Grant No 2013CFB289.

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https://cpl.iphy.ac.cn/10.1088/0256-307X/33/12/128701 OR https://cpl.iphy.ac.cn/Y2016/V33/I12/128701

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