The Electrophysiology of Atrial Fibrillation: From Basic Mechanisms to Catheter Ablation

Figure 5

Schematic representation of a rotor. The front of the depolarization wave (red line) propagates at a higher speed in the periphery (point 1) than in the center (point 3). The green line represents the repolarized edge. The wavelength, the refractoriness, and the conduction velocity differ from the periphery to the center; however, the depolarization frequency in a stable rotor is the same (see text for details).