Document Detail

Epidural spinal cord stimulation: calculation of field potentials with special reference to dorsal column nerve fibers.
MedLine Citation:
PMID:  2026427     Owner:  NLM     Status:  MEDLINE    
The effect of electrical stimulation with several electrode combinations on nerve fibers with different orientations in the spinal cord was investigated by computing the steady-state field potentials and activating functions. At first an infinite homogeneous model was used while secondly the spinal cord and its surrounding tissues were modeled as an inhomogeneous anisotropic volume conductor. The effect of mediodorsal epidural stimulation was calculated. It was concluded that with cathodal stimulation, mediodorsally in the epidural space, longitudinal fibers are depolarized, but dorsoventral ones are hyperpolarized. With anodal stimulation the opposite will occur. It was found that parameters substantially affecting the potential distribution in the dorsal columns are the conductivity of the white matter and the width and the conductivity of the csf layer.
J J Struijk; J Holsheimer; B K van Veen; H B Boom
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  IEEE transactions on bio-medical engineering     Volume:  38     ISSN:  0018-9294     ISO Abbreviation:  IEEE Trans Biomed Eng     Publication Date:  1991 Jan 
Date Detail:
Created Date:  1991-06-10     Completed Date:  1991-06-10     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0012737     Medline TA:  IEEE Trans Biomed Eng     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  104-10     Citation Subset:  IM    
Department of Electrical Engineering, University of Twente, Enschede, The Netherlands.
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MeSH Terms
Action Potentials / physiology*
Electric Stimulation
Models, Biological*
Spinal Cord / physiology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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