Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/96855
Title: Estimation of optimal insertion angle in a mammalian outer hair cell stereocilium
Authors: Abedinnasab, Mohammad H.
Baek, Jong Dae
Yoon, Yong-Jin
Han, Beibei
Kwak, Sang Kyu
Keywords: DRNTU::Engineering::Chemical engineering
Issue Date: 2012
Source: Baek, J. D., Yoon, Y.-J., Abedinnasab, M. H., Han, B., & Kwak, S. K. (2012). Estimation of optimal insertion angle in a mammalian outer hair cell stereocilium. Journal of Biomechanics, 45(10), 1823-1827.
Series/Report no.: Journal of biomechanics
Abstract: Optimal insertion angle of mammalian stereocilia is estimated from the finite element analysis of the tip motion of outer hair cells (OHCs) stereocilia. The OHC stereocilia motion in the acousticolateral system appears to result in the mechanoelectrical transduction channels. Deflection of the hair bundle towards the tallest row of stereocilia causes increased probability of opening of ion channels. In this work, we focus on one of the physical features of the OHC stereocilium, the initial insertion angle of the tallest row into the tectorial membrane (TM), and its effects on the stereocilia's deflection motion. A three-dimensional model was built for the tallest stereocilium and the TM at the region where the best frequency was 500Hz. The mechanical interactions between the embedded stereocilia and the TM have been implemented into the finite element simulation. We found that, the optimum insertion angle of the tallest stereocilium into the TM was 69.8°, where the stereocilium is maximally deflected. This quantity is consistent with the histological observation obtained from the literature.
URI: https://hdl.handle.net/10356/96855
http://hdl.handle.net/10220/11654
ISSN: 0021-9290
DOI: http://dx.doi.org/10.1016/j.jbiomech.2012.04.012
Rights: © 2012 Elsevier.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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