Abstract

It is established that the isolated outer hair cells (OHCs) can elongate and contract in response to an electrical stimulation, and it is considered that the force produced by the OHC, which accompanies its motility, affects the basilar membrane motion. As a result, the force production of the OHC presumably leads to the fine tuning of the mammalian cochlea. As the force production of the OHC is known to be related to the mechanical properties of the OHC, it is important to understand its mechanical properties. In this study, in order to understand the local Young's modulus of the OHC, the difference in the Young's modulus along the cell axis is measured with an atomic force microscope (AFM). Then, the relationship between the Young's modulus of the OHC and its length is discussed.

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