Figure 5

SBP-IBI phase in the control group (black) and in SAD groups 1 day (red), 3 days (light blue) and 7 months (green) after denervation. Circular mean and ±circular standard error: note the high uncertainty of estimates at frequencies where the coherency modulus is low (Fig. 4); in the ULF band, where it is high, the phase is close to −π/2 [rad] in controls, and to −π [rad] in all SAD groups.