Fig. 3.

Seven snapshots at ν = 0.220, 0.206, 0.178, 0.172, 0.160, 0.156, and 0.131 of variability in event duration (expressed as a fraction of the simulation time 1.2 × 10⁷ time steps), number of AF events, and AF burden for repeated simulations as a function of fraction of vertical connections. We rerun the simulations shown in Fig. 2 for 1.2 × 10⁷ time steps starting from particular values of the fraction vertical connections (see the vertical dashed lines in Fig. 2) in which at least one of the four simulations displayed non-sinus-rhythm behavior. Note that we see variability both within a patient as the time course of AF progresses and between patients. These three observables of event duration, number of AF events, and AF burden are seen to vary significantly between real patients as well [3].