Title :
Virtual electrode effects in a model of cardiac stimulation
Author :
Trayanova, Natalia
Author_Institution :
Dept. of Biomed. Eng., Duke Univ., Durham, NC, USA
Abstract :
The study presents a model describing the response of a two-dimensional slice of myocardium to electrical stimulation. It incorporates a continuous representation of the multicellular, syncytial cardiac tissue based on the bidomain model. Here, the bidomain model is modified by introducing periodic conductivities in both directions to represent the discontinuous electrical properties of the intracellular space. Virtual electrode effects due to the syncytial (collective) behavior of the myocardium are identified together with microscopic virtual electrode effects associated with the local cellular response to the applied electrical stimulus
Keywords :
bioelectric phenomena; cardiology; physiological models; applied electrical stimulus; bidomain model; cardiac stimulation model; discontinuous electrical properties; intracellular space; local cellular response; microscopic virtual electrode effects; multicellular syncytial cardiac tissue; myocardium collective behavior; periodic conductivities; two-dimensional myocardium slice; Anisotropic magnetoresistance; Biomembranes; Cardiac tissue; Conductivity; Defibrillation; Electric shock; Electrical stimulation; Electrodes; Large-scale systems; Microscopy; Myocardium;
Conference_Titel :
Engineering in Medicine and Biology Society, 1994. Engineering Advances: New Opportunities for Biomedical Engineers. Proceedings of the 16th Annual International Conference of the IEEE
Conference_Location :
Baltimore, MD
Print_ISBN :
0-7803-2050-6
DOI :
10.1109/IEMBS.1994.412104
