Title :
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
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2282640
