Figure 5: Initiation of Spiral Reentry in a Continuous, Uniform Sheet Model.

Upper left panel: A uniform conditioning stimulus is applied. Upper right panel: A premature stimulus applied at a site distant from the conditioning stimulus initiates clockwise circus movement tachycardia (reentry). Lower panels: The spiral reentry wave continues to rotate around an inexcitable core and is able to meander in space. See text for additional details. Reproduced with permission from van Capelle and Durrer.²⁶