Figure 4.

Simulations of rotor drift in the PV-LAJ and I_K1 role against all other currents. (A) Rotor dynamics on the cylindrical model using the CRN-K kinetics under three conditions: (1) all currents varied spatially, (2) all currents varied spatially, except I_K1, and (3) only I_K1 varied spatially. Color-coded traces show the SP trajectory of rotors initiated at the middle of the models (blue dots). Rotors under Conditions I and III drifted toward the PV edge. Drift direction was reversed when I_K1 heterogeneity was excluded in Condition II. (B) Time–space plots and arrows show rotor drift for the three conditions in a flat 2D model (reproduced from Ref. 19).