Figure 9.

Anisotropic tissue mapping with fiber geometry, a case of reentry. Tissue sheet is 10 × 10 mm² (200 × 200 nodes with a space step of 0.05 mm); a geometry described by Eq. (23) and Fig. 8a is integrated to produce a virtual electrode polarization (Fig. 8b at 96 ms). Reentry is induced as describe in Mazeh²³ (Fig. 44). Colorbar shows arrival times in ms (whole run time is about 200 ms), contours correspond to activation times at nodes on the wave fronts; fiber direction is horizontal (except for the D × D region described in Fig. 8a) and the conduction velocity is greater in that direction for the anisotropic tissue. Vectors (black) are conduction velocities for points on the wave fronts.