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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Trayanova, N. |
| Copyright Year | 1993 |
| Description | Author affiliation: Dept. of Biomed. Eng., Duke Univ., Durham, NC, USA (Trayanova, N.) |
| Abstract | The changes in the transmembrane potential in cardiac tissue due to a point source extracellular stimulus are studied to help clarify the underlying mechanisms of cardiac stimulation and defibrillation. The present calculations employ the bidomain model of the myocardium. The tissue is considered passive and under steady-state conditions. Membrane polarization throughout the tissue is determined by the relative degrees of anisotropy in the intracellular space (the collection of the interiors of all fibers, including myoplasm and intracellular junctions) and in the extracellular space (interstitium). The results show that the intracellular space has to have an anisotropy ratio twice (or more) that of the extracellular space in order that regions of suprathreshold depolarization appear in the tissue interior.< |
| Starting Page | 253 |
| Ending Page | 256 |
| File Size | 363054 |
| Page Count | 4 |
| File Format | |
| ISBN | 0818654708 |
| DOI | 10.1109/CIC.1993.378456 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1993-09-05 |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Myocardium Anisotropic magnetoresistance Extracellular Optical fiber polarization Biomembranes Conductivity Defibrillation Predictive models Steady-state Cardiac tissue |
| Content Type | Text |
| Resource Type | Article |
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