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An adaptive model simulating the somatic motility and the active hair bundle motion of the OHC
a Department of Applied Electronics, Kaunas University of Technology, Lithuania .
Halmstad University, School of Information Science, Computer and Electrical Engineering (IDE), Halmstad Embedded and Intelligent Systems Research (EIS).ORCID iD: 0000-0003-2185-8973
Department of Physiology, Kaunas University of Medicine, Lithuania.
Department of Biochemistry, Kaunas University of Medicine, Lithuania.
2009 (English)In: Computers in Biology and Medicine, ISSN 0010-4825, E-ISSN 1879-0534, Vol. 39, no 9, p. 800-809Article in journal (Refereed) Published
Abstract [en]

The outer hair cells (OHC) of the mammalian inner ear change the sensitivity and frequency selectivity of the filtering system of the cochlea using two kinds of mechanical activity: the somatic motility and the active hair bundle motion. We designed a non-linear adaptive model of the OHC employing both mechanisms of the mechanical activity. The modeling results show that the high sensitivity and frequency selectivity of the filtering system of the cochlea depend on the somatic motility of the OHC. However, both mechanisms of mechanical activity are involved in the adaptation to sound intensity and efferent-synaptic influence. The fast (alternating) component (AC) of the mechanical–electrical transduction signal controls the motor protein prestin and fast changes in axial length of the cell. The slow (direct) component (DC) appearing at high signal intensity affects the axial stiffness, the cell length and the position of the hair bundle. The efferent influence is realized by the same mechanism.

Place, publisher, year, edition, pages
New York: Pergamon , 2009. Vol. 39, no 9, p. 800-809
Keyword [en]
Inner ear, Outer hair cell model, Somatic motility, Active hair bundle motion, Cochlear amplifier
National Category
Biomedical Laboratory Science/Technology
Identifiers
URN: urn:nbn:se:hh:diva-103DOI: 10.1016/j.compbiomed.2009.06.010ISI: 000269389800008PubMedID: 19615677Scopus ID: 2-s2.0-67849086667OAI: oai:DiVA.org:hh-103DiVA, id: diva2:235976
Available from: 2009-09-18 Created: 2009-09-18 Last updated: 2017-12-13Bibliographically approved

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Verikas, Antanas

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