Fig. 5.

Sympathetic nerves exert functional control of sinus rhythm activation and repolarization in the peri-infarct zone. Maps depicting a peri-infarct zone and the influence of right and left stellate ganglion stimulation (RSGS and LSGS), respectively, on activation recovery intervals (ARIs), a surrogate for action potential duration (A), and activation in sinus rhythm (B); black arrows in A and B highlight the same region for comparison across conditions. Heart rate (HR) for each map is shown in the top right corner of A; bpm/beats/min. Composite data is shown in C and D. for ARI and mean activation time (n = 7, ***P < 0.001, *P < 0.05, Wilcoxon signed rank test).