Meandering magnitude and fractionation, A) Spatiotemporal characteristics of the spiral wave tip in uniform model. Diffusion coefficient ratio is 1:3:6 for left, middle and right columns, respectively. Top, snapshots of spiral wave activity with tip trajectory in red. Middle, spatiotemporal trajectories of meandering tip (kink in the initial x6 tip trajectory corresponds to a transient stabilization phase). Bottom, pseudo unipolar electrograms at a single location (white asterisks spiral snapshots) show increased irregularity with increasing meandering diameters. B) Top - power spectra of the spiral tip x-coordinate. Bottom - Power spectra of the residual constituent (RC) of the signals measured. Scale bars – 1 power spectral arbitrary unit.