Figure 7.

Analytically derived spatiotemporal spiral wave tip trajectories for stable figure-of-eight reentry. Position of spiral wave tip for clockwise (counterclockwise) rotating spiral is shown in blue (red). (a) The tip location at each instant of time for each spiral wave identified as the center of rotation, i.e., (x,y) site was (90,100) for counterclockwise and (110,100) for clockwise waves. (b) The tip locations identified using traditional methods which contain a rotational component, i.e., (x,y) site was (90+10^* cos(ω_s^*t), 100+10^* sin(ω_s^*t)) for counterclockwise and (110−10^* cos(ω_s^*t), 100+10^* sin(ω_s^*t)) for clockwise waves. See text for discussion.