The effect of hair bundle shape on hair bundle hydrodynamics of non-mammalian inner ear hair cells for the full frequency range

Hearing Research
L F Shatz

Abstract

The effect of the size and the shape of the hair bundle of a hair cell in the inner ear of non-mammals on its motion for the full range of frequencies is determined thereby extending the results of a previous analysis of hair bundle motion for high and low frequencies [Hear Res. 141 (2000) 39-50]. A hemispheroid is used to represent the hair bundle because it can represent a full range of shapes, from thin, pencil-like shapes to wide, flat, disk-like shapes. Boundary element methods are used to approximate the solution for the hydrodynamics. For physiologically relevant parameters, an excellent match is obtained between the model's predictions and measurements of hair bundle motion in the free-standing region of the basilar papilla of the alligator lizard [Aranyosi, Measuring sound-induced motions of the alligator lizard cochlea. Massachusetts Institute of Technology, PhD Thesis, 2002]. Neither in the model's predictions nor in experimental measurements is sharp tuning observed. The model predicted the low frequency region of neural tuning curves for the alligator lizard and bobtail lizard, but could not predict the sharp tuning or the high frequency region. An element that represents an active mechanism is added to the hair bu...Continue Reading

References

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Citations

Jun 6, 2008·The Journal of the Acoustical Society of America·Lisa F Shatz, Craig W Christensen
Nov 7, 2007·Hearing Research·Geoffrey A Manley, Christine Köppl
Nov 20, 2015·International Journal of Cosmetic Science·Liu YanZhu Yong
Feb 19, 2016·Journal of the Royal Society, Interface·Guangjian NiJohannes Baumgart
Dec 3, 2010·Proceedings. Biological Sciences·Rafael MaiaMatthew D Shawkey

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