Modeling virtual channels in cochlear implant systems

T.m. Choi*, Wei Dian Lai

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Simultaneous electrical stimulation of neighboring electrodes generates channel interaction, which is generally undesirable. However, it is possible to create virtual channels or virtual electrodes by stimulating two neighboring electrodes in a suitable manner. In this paper, the ratio of the magnitude of voltage applied to two neighboring electrodes was adjusted according to: 4:0, 3:1, 2:2, 1:3, 0:4. Our model was created by coupling an Ineraid electrode array with a half turn of a human cochlea finite element model. The five different conditions generate five different activating function peaks along the Basilar membrane and between the electrodes, representing five different pitches as perceive by the cochlear implant users. The modeling result is consistent with experimental result.

Original languageEnglish
Title of host publication12th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2006
DOIs
StatePublished - 21 Nov 2006
Event12th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2006 - Miami, FL, United States
Duration: 30 Apr 20063 May 2006

Publication series

Name12th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2006

Conference

Conference12th Biennial IEEE Conference on Electromagnetic Field Computation, CEFC 2006
CountryUnited States
CityMiami, FL
Period30/04/063/05/06

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