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Implications of macroscopic source strength on cardiac cellular activation models
1Department of Biomedical Engineering, Duke University, Durham, North Carolina 27706.
Journal of Electrocardiology
|April 1, 1991
Summary
This study compares cardiac activation models to evaluate microscopic processes. Results suggest cardiac tissue activation is uniform and transverse to the fiber axis.
Area of Science:
- Cardiology
- Biophysics
- Computational Biology
Background:
- Macroscopic field patterns of cardiac activation are well-documented.
- Cellular-level models offer insights into microscopic cardiac activation processes.
Purpose of the Study:
- To compare cellular-level cardiac activation models.
- To evaluate controversial microscopic cardiac activation processes by analyzing generated sources and macroscopic fields.
Main Methods:
- Comparison of multiple cellular-level cardiac activation models.
- Analysis of macroscopic fields generated by each model.
Main Results:
- Identified similarities and differences in sources and macroscopic fields across models.
- Evaluated the plausibility of different microscopic activation mechanisms.
Conclusions:
- Cardiac tissue activation, at both macroscopic and microscopic levels, is likely a uniform process.
- Cardiac activation predominantly occurs in a direction transverse to the fiber axis.