Surface trajectories of scroll waves in a three-dimensional realistic anatomical structure of the human atria for all variants of the NM and the CM-AF. Trajectories last until scroll wave extinction or for a maximum of 10 s. All scroll waves were initiated in the same location on the left atrium free wall. Because the atria are thin, the trajectories on the exterior and interior are nearly identical. The view shows the left atrium on the left and the right atrium on the right. In all cases, translational drift is seen that was not seen for spiral waves in two-dimensional sheets (see Fig. 7). Extinction occurred at the pulmonary vein ostia within 10 seconds for the NM, NM-C, NMf-C, NMf-C2, NMf-AF, NM-X, and NMf-X.