Modeling ECAP in Cochlear Implants Using the FEM and Equivalent Circuits

Author

Choi, Charles T. M. ; Shao Po Wang

Author_Institution

Inst. of Biomed. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

50

Issue

2

fYear

2014

fDate

Feb. 2014

Firstpage

49

Lastpage

52

Abstract

Evoked compound action potential (ECAP) has been used clinically to determine whether auditory nerves are responding to electrical stimulation in cochlear implant systems. In this paper, a novel scheme is proposed to model ECAP and its measurement using a generalized Schwarz-Eikhof-Frijns nerve model and equivalent circuits based on the finite-element (FE) method. A 3-D FE model of a cochlear implant is used in this scheme. The ECAP modeling result is validated with clinical ECAP measurement results.

Keywords

auditory evoked potentials; cochlear implants; equivalent circuits; finite element analysis; neurophysiology; 3-D FE model; ECAP modeling; FEM; auditory nerves; clinical ECAP measurement; cochlear implant systems; electrical stimulation; equivalent circuits; evoked compound action potential; finite-element method; generalized Schwarz-Eikhof-Frijns nerve model; Cochlear implants; Computational modeling; Electric potential; Electrodes; Equivalent circuits; Integrated circuit modeling; Solid modeling; Coupling circuits; electrical stimulation; equivalent circuits; evoked compound action potential (ECAP); finite element method (FEM); generalized Schwarz-Eikhof-Frijns (GSEF) model;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2013.2282640

Filename

6748935