Drift of Scroll Wave Filaments in an Anisotropic Model of the Left Ventricle of the Human Heart

Figure 4

Drift of a scroll wave in a model of human ventricles represented by trajectories of filament on a midmyocardial surface. (a) Initial position of a scroll wave at the midmyocardial surface. Different colors represent different values of the transmembrane voltage (variable ) with the red color corresponding to and the blue color corresponding to . (b) instantaneous (black) and averaged (yellow) filament positions. The arrows show the drift direction. The left panel shows the drift for the geometry with an apical thickness of mm; the right panel shows the same for mm. Simulations for the normal LV shape , with anisotropy and high excitability .

(a)

(b)