Simulation of Ectopic Pacemakers in the Heart: Multiple Ectopic Beats Generated by Reentry inside Fibrotic Regions

Figure 2

(a) Six basic units being combined to form a larger tissue. (b) Basic unit of cardiac myocyte distribution based on a total of 32 cells. (c) This figure presents an example of how different gap junctions are distributed in three neighboring myocytes that belong to the basic unit. There are only 5 possible types of connections between neighboring volumes that are membrane, which indicated no-flux between neighboring volumes; cytoplasm, which indicates the neighboring volumes are within the same cell; three possible types of gap junctions, plicate, intriplicate, and combined plicate.

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