Figure 4.

Left: vulnerability grids for the three cases considered ((A) regionally ischaemic model, (B) regionally ischaemic model without transmural gradient of I_K(ATP) activation, (C) regionally ischaemic model without epicardial border zone). Rows correspond to coupling intervals in milliseconds. Columns correspond to time post-occlusion in minutes. Episodes (rectangles) are marked dark grey for sustained re-entry, light grey for non-sustained re-entry, or white for no re-entry. Right: total number of initiated re-entries by case. Each vertical bar is broken into sustained and non-sustained re-entry segments. Columns (A–C) correspond to the vulnerability grids denoted by the same letters.