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Fluid coupling in a discrete cochlear model

Fluid coupling in a discrete cochlear model
Fluid coupling in a discrete cochlear model
The interaction between the basilar membrane, BM, dynamics and the fluid coupling in the cochlea can be formulated using a discrete model by assuming that the BM is divided into a number of longitudinal elements. The form of the fluid coupling can then be understood by dividing it into a far field component, due to plane wave acoustic coupling, and a near field component, due to higher order evanescent acoustic modes. The effects of non?uniformity and asymmetry in the cross?sectional areas of the fluid chambers can also be accounted for within this formulation. The discrete model is used to calculate the effect on the coupled BM response of a short cochlear implant, which reduces the volume of one of the fluid chambers over about half its length. The passive response of the coupled cochlea at lower frequencies is shown to be almost unaffected by this change in volume.
prosthetics, frequency measurement, hearing, acoustic impedance
978-0-7354-0975-0
328-332
AIP Publishing
Elliott, S.J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Lineton, B.
1ace4e96-34da-4fc4-bc17-a1d82b2ba0e2
Ni, G.
f6ddc112-7d81-403a-b97a-7ecbc8fd4e59
Shera, Christopher A.
Olson, Elizabeth S.
Elliott, S.J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Lineton, B.
1ace4e96-34da-4fc4-bc17-a1d82b2ba0e2
Ni, G.
f6ddc112-7d81-403a-b97a-7ecbc8fd4e59
Shera, Christopher A.
Olson, Elizabeth S.

Elliott, S.J., Lineton, B. and Ni, G. (2011) Fluid coupling in a discrete cochlear model. Shera, Christopher A. and Olson, Elizabeth S. (eds.) In What Fire is in Mine Ears: Progress in Auditory Biomechanics. Proceedings of the 11th International Mechanics of Hearing Workshop. AIP Publishing. pp. 328-332 . (doi:10.1063/1.3658106).

Record type: Conference or Workshop Item (Paper)

Abstract

The interaction between the basilar membrane, BM, dynamics and the fluid coupling in the cochlea can be formulated using a discrete model by assuming that the BM is divided into a number of longitudinal elements. The form of the fluid coupling can then be understood by dividing it into a far field component, due to plane wave acoustic coupling, and a near field component, due to higher order evanescent acoustic modes. The effects of non?uniformity and asymmetry in the cross?sectional areas of the fluid chambers can also be accounted for within this formulation. The discrete model is used to calculate the effect on the coupled BM response of a short cochlear implant, which reduces the volume of one of the fluid chambers over about half its length. The passive response of the coupled cochlea at lower frequencies is shown to be almost unaffected by this change in volume.

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More information

Published date: July 2011
Venue - Dates: conference; us; 2011-07-16; 2011-07-21, Williamstown, United States, 2011-07-16 - 2011-07-21
Keywords: prosthetics, frequency measurement, hearing, acoustic impedance
Organisations: Signal Processing & Control Grp

Identifiers

Local EPrints ID: 349792
URI: http://eprints.soton.ac.uk/id/eprint/349792
ISBN: 978-0-7354-0975-0
PURE UUID: d6e7c950-91a3-47c5-a1b5-4a78f1809308
ORCID for B. Lineton: ORCID iD orcid.org/0000-0003-4784-7762

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Date deposited: 11 Mar 2013 16:29
Last modified: 15 Mar 2024 03:15

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Contributors

Author: S.J. Elliott
Author: B. Lineton ORCID iD
Author: G. Ni ORCID iD
Editor: Christopher A. Shera
Editor: Elizabeth S. Olson

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