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Conference Paper: Modeling of the current density distribution under surface posterior-tibial-nerve electric stimulator

TitleModeling of the current density distribution under surface posterior-tibial-nerve electric stimulator
Authors
Keywordscurrent density distribution
potential field distribution
posterior tibial nerve
Issue Date1998
PublisherIEEE.
Citation
The 20th IEEE Engineering in Medicine and Biology Society Conference Proceedings, Hong Kong, China, 29 October - 1 November 1998, v. 6, p. 2991-2993 How to Cite?
AbstractStimulation of the posterior tibial nerve is commonly used in the measurement of somatosensory evoked potential (SEP). To improve the efficiency of stimulation, the potential field and current density distributions under the surface electrodes were modeled and simulated. In our model, three layers were assumed: (1) the air environment, (2) electrode and paste (3) human body (skin and soft tissues). The mirror method was used to analyze the potential field of point charge. Integration of the field and the area of the stimulus gave the potential field of one surface electric pole. The potential field distribution of the bipolar stimulator was obtained by superimposition of two unipolar fields. Finally, the current density distribution was calculated by Laplace equation. The analytical solution of the potential field was found and the numerical solution of the current density distribution calculated. The potential field and current density distributions were simulated by 2-D plot. From the model and simulation, the potential and current density distributions were not found to be uniform under transcutaneous stimulation electrode and the maximum current density is located under the poles. We recommend that bipolar stimulator should be applied axially along the stimulated nerve course.
Persistent Identifierhttp://hdl.handle.net/10722/46935
ISSN

 

DC FieldValueLanguage
dc.contributor.authorHu, Yen_HK
dc.contributor.authorYu, Jen_HK
dc.contributor.authorLuk, KDKen_HK
dc.contributor.authorWong, YWen_HK
dc.contributor.authorLu, WWen_HK
dc.contributor.authorLeong, JCYen_HK
dc.date.accessioned2007-10-30T07:01:45Z-
dc.date.available2007-10-30T07:01:45Z-
dc.date.issued1998en_HK
dc.identifier.citationThe 20th IEEE Engineering in Medicine and Biology Society Conference Proceedings, Hong Kong, China, 29 October - 1 November 1998, v. 6, p. 2991-2993en_HK
dc.identifier.issn1557-170Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/46935-
dc.description.abstractStimulation of the posterior tibial nerve is commonly used in the measurement of somatosensory evoked potential (SEP). To improve the efficiency of stimulation, the potential field and current density distributions under the surface electrodes were modeled and simulated. In our model, three layers were assumed: (1) the air environment, (2) electrode and paste (3) human body (skin and soft tissues). The mirror method was used to analyze the potential field of point charge. Integration of the field and the area of the stimulus gave the potential field of one surface electric pole. The potential field distribution of the bipolar stimulator was obtained by superimposition of two unipolar fields. Finally, the current density distribution was calculated by Laplace equation. The analytical solution of the potential field was found and the numerical solution of the current density distribution calculated. The potential field and current density distributions were simulated by 2-D plot. From the model and simulation, the potential and current density distributions were not found to be uniform under transcutaneous stimulation electrode and the maximum current density is located under the poles. We recommend that bipolar stimulator should be applied axially along the stimulated nerve course.en_HK
dc.format.extent278447 bytes-
dc.format.extent2166303 bytes-
dc.format.extent4080 bytes-
dc.format.extent4339 bytes-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypeapplication/pdf-
dc.format.mimetypetext/plain-
dc.format.mimetypetext/plain-
dc.languageengen_HK
dc.publisherIEEE.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©1998 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.en_HK
dc.subjectcurrent density distributionen_HK
dc.subjectpotential field distributionen_HK
dc.subjectposterior tibial nerveen_HK
dc.titleModeling of the current density distribution under surface posterior-tibial-nerve electric stimulatoren_HK
dc.typeConference_Paperen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1557-170X&volume=6&spage=2991&epage=2993&date=1998&atitle=Modeling+of+the+current+density+distribution+under+surface+posterior-tibial-nerve+electric+stimulatoren_HK
dc.description.naturepublished_or_final_versionen_HK
dc.identifier.doi10.1109/IEMBS.1998.746119en_HK
dc.identifier.hkuros43518-

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