Activation maps for control (left), LV free wall scar (middle) and septal scar (right), for BCL of 300 ms (top) and 600 ms (middle); the scars are the largest simulated. The difference between the activation maps for 600 ms and 300 ms is shown at the bottom. All activation maps for BCL , BCL and for the differences between the two share a colour-scale; these are shown to the right of the rows. In all cases, data are plotted on the epicardial surface, along with clipping planes used to highlight endocardial and midwall data.