Abstract
The mechanical contraction of heart muscle fibers is triggered by a propagating electrochemical perturbation, the excitatory process. The propagation of excitation is brought about by the flow of electric currents. In the extracellular space, the currents flow from those myocardial areas where the cell membranes are more polarized toward the regions where they are less polarized or inversely polarized (outside negative relative to the inside), as occurs in fully excited fibers. Repolarization is also accompanied by the generation of electric currents.
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Taccardi, B. (1998). Future Prospects and Applications. In: Mirvis, D.M. (eds) Body Surface Electrocardiographic Mapping. Developments in Cardiovascular Medicine, vol 82. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-1769-2_14
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DOI: https://doi.org/10.1007/978-1-4613-1769-2_14
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