Figure 2
Comparison of MBP power spectra in the control group (black) vs. SAD groups 1 day (red), 3 days (light blue) and 7 months (green) after denervation. Upper panels: geometric mean ± geometric standard error, plotted in log-log scale; lower panels: Student t statistics for each spectral line, with 10%, 5% and 1% statistical thresholds (dashed horizontal lines). At frequencies where the Student t is above the threshold, the difference between groups is statistically significant. Spectral lines below 0.1 Hz have greater amplitude in SAD rats than in controls at any time from denervation; spectral lines above 1 Hz are greater in SAD rats, the difference being more pronounced in the acute than in the chronic phases. Interestingly, a spectral peak in control rats at 0.38 Hz (i.e., in the LF band) disappears in SAD rats.
