The state-space formalism [ Elliott S. J., et al. (2007). J. Acoust. Soc. Am. 122, 2759–2771 ] allows one to discretize cochlear models in a straightforward matrix form and to modify the main physical properties of the cochlear model by changing the position and functional form of a few matrix elements. Feed-forward and feed-backward properties can be obtained by simply introducing off-diagonal terms in the matrixes expressing the coupling between the dynamical variables and the additional active pressure on the basilar membrane. Some theoretical issues related to different cochlear modeling choices, their implementation in a state-space scheme, and their physical consequences on the cochlear phenomenology, as predicted by numerical simulations, are discussed. Different schematizations of the active term describing the behavior of the outer hair cell’s feedback mechanism, including nonlinear and nonlocal dependences on either pressure or basilar membrane displacement, are also discussed, showing their effect on some measurable cochlear properties.

Sisto, R., Moleti, A., Paternoster, N., Botti, T., & Bertaccini, D. (2010). Different models of the active cochlea, and how to implement them in the state-space formalism. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 128, 1191-1202 [10.1121/1.3466846].

Different models of the active cochlea, and how to implement them in the state-space formalism

MOLETI, ARTURO;BERTACCINI, DANIELE
2010

Abstract

The state-space formalism [ Elliott S. J., et al. (2007). J. Acoust. Soc. Am. 122, 2759–2771 ] allows one to discretize cochlear models in a straightforward matrix form and to modify the main physical properties of the cochlear model by changing the position and functional form of a few matrix elements. Feed-forward and feed-backward properties can be obtained by simply introducing off-diagonal terms in the matrixes expressing the coupling between the dynamical variables and the additional active pressure on the basilar membrane. Some theoretical issues related to different cochlear modeling choices, their implementation in a state-space scheme, and their physical consequences on the cochlear phenomenology, as predicted by numerical simulations, are discussed. Different schematizations of the active term describing the behavior of the outer hair cell’s feedback mechanism, including nonlinear and nonlocal dependences on either pressure or basilar membrane displacement, are also discussed, showing their effect on some measurable cochlear properties.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/02 - Fisica Teorica, Modelli e Metodi Matematici
Settore FIS/07 - Fisica Applicata(Beni Culturali, Ambientali, Biol.e Medicin)
Settore MAT/08 - Analisi Numerica
English
Con Impact Factor ISI
http://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=JASMAN000128000003001191000001&idtype=cvips&prog=normal
Sisto, R., Moleti, A., Paternoster, N., Botti, T., & Bertaccini, D. (2010). Different models of the active cochlea, and how to implement them in the state-space formalism. THE JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 128, 1191-1202 [10.1121/1.3466846].
Sisto, R; Moleti, A; Paternoster, N; Botti, T; Bertaccini, D
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/8356
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