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dc.contributor.authorChoi, Charles T. M.en_US
dc.contributor.authorHsu, Chien-Huaen_US
dc.date.accessioned2014-12-08T15:09:50Z-
dc.date.available2014-12-08T15:09:50Z-
dc.date.issued2009-03-01en_US
dc.identifier.issn0090-6964en_US
dc.identifier.urihttp://dx.doi.org/10.1007/s10439-008-9622-9en_US
dc.identifier.urihttp://hdl.handle.net/11536/7536-
dc.description.abstractSimultaneous electrical stimulation of neighboring electrodes in cochlear prosthesis systems generates channel interaction. However, intermediate channels, or virtual channels between the neighboring electrodes can be created through controlled channel interaction. This effect may be exploited for sending new information to the hearing nerves by stimulating in a suitable manner. The actual stimulation sites are therefore not limited to the number of electrodes. Clinical experiments, however, show that virtual channels are not always perceived. In this paper, electrical simulation with finite element analysis on a half turn human cochlea model is adopted to model the virtual channel effect, and the conditions for generating virtual channels are discussed. Five input current ratios (100/0, 70/30, 50/50, 30/70, 0/100) are applied to generate virtual channels. Three electrode arrays parameters are taken into consideration: distance between electrode contact and modiolus, spacing between adjacent electrode contacts and scale of electrode contact size. By observing the activating function contours, the virtual channel patterns and performances can be measured and examined. The results showed that a broad excitation pattern is necessary to produce the kind of electrode interaction that can form distinct virtual channels.en_US
dc.language.isoen_USen_US
dc.subjectCochlear prosthesisen_US
dc.subjectCochlear implanten_US
dc.subjectVirtual channelen_US
dc.subjectCurrent steeringen_US
dc.subjectElectrical stimulationen_US
dc.subjectVolume conduction modelen_US
dc.subjectActivating functionen_US
dc.subjectFinite element analysisen_US
dc.titleConditions for Generating Virtual Channels in Cochlear Prosthesis Systemsen_US
dc.typeArticleen_US
dc.identifier.doi10.1007/s10439-008-9622-9en_US
dc.identifier.journalANNALS OF BIOMEDICAL ENGINEERINGen_US
dc.citation.volume37en_US
dc.citation.issue3en_US
dc.citation.spage614en_US
dc.citation.epage624en_US
dc.contributor.department分子醫學與生物工程研究所zh_TW
dc.contributor.department資訊工程學系zh_TW
dc.contributor.departmentInstitute of Molecular Medicine and Bioengineeringen_US
dc.contributor.departmentDepartment of Computer Scienceen_US
dc.identifier.wosnumberWOS:000263058300015-
dc.citation.woscount10-
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