(a) Mean percentage decrease in volume of excitable intramural tissue within LV/septum, averaged over all 6 defibrillation episodes, as a function of SS at shock-end (left) and post-shock (right) for vessel (blue solid-line, squares) and simplified (red dashed line, circles) models. (b) Percentage of successful defibrillation episodes in which all activity is entirely eliminated <15ms of shock-end as function of SS for vessel (blue solid-line, squares) and simplified (red dashed-line, circles) models.