DocumentCode
1379863
Title
How electrode size affects the electric potential distribution in cardiac tissue
Author
Patel, Salil G. ; Roth, Bradley J.
Author_Institution
G.W.C. Sch. of Eng., Johns Hopkins Univ., Baltimore, MD, USA
Volume
47
Issue
9
fYear
2000
Firstpage
1284
Lastpage
1287
Abstract
The authors investigate the effect of electrode size on the transmembrane potential distribution in the heart during electrical stimulation. The bidomain model is used to calculate the transmembrane potential in a three-dimensional slab of cardiac tissue. Depolarization is strongest under the electrode edge. Regions of depolarization are adjacent to regions of hyperpolarization. The average ratio of peak depolarization to peak hyperpolarization is a function of electrode radius, but over a broad range is close to three.
Keywords
biomedical electrodes; cardiology; physiological models; cardiac electrophysiology; depolarization regions; electric potential distribution; electrode radius; hyperpolarization regions; three-dimensional cardiac tissue slab; Biomembranes; Boundary conditions; Cardiac tissue; Current density; Electric potential; Electrical stimulation; Electrodes; Heart; Slabs; Voltage; Animals; Biomedical Engineering; Electric Stimulation; Electrodes; Heart; Membrane Potentials; Models, Cardiovascular;
fLanguage
English
Journal_Title
Biomedical Engineering, IEEE Transactions on
Publisher
ieee
ISSN
0018-9294
Type
jour
DOI
10.1109/10.867964
Filename
867964
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