Fig. 5

The activation maps of ventricles under the LBBB (a) and CRT (b) conditions. While the RV was activated before the LV in the LBBB condition, both ventricles were activated almost simultaneously in the CRT condition. CRT = cardiac resynchronization therapy, LBBB = left bundle branch block, LV = left ventricle, RV = right ventricle, V_m = membrane voltage