Table 2.
Normalized powers in the respiratory (R) and cardiac (HR1-2–3) bands, for Internal Carotid Artery (ICA), Internal Jugular vein (IJV), and cerebrospinal fluid (CSF)
Region of interest | F | PN | PD | F vs PN | F vs PD | PN vs PD | |
---|---|---|---|---|---|---|---|
Respiratory band (R) | ICA | 0.01 [0.01–0.07] | 0.03 [0.01–0.11] | 0.07 [0.02–0.44] | < 0.001 | < 0.001 | < 0.001 |
IJV | 0.06 [0.01–0.52] | 0.10 [0.01–0.49] | 0.31 [0.04–0.74]# | < 0.001 | < 0.001 | < 0.001 | |
CSF | 0.02 [0.01–0.17] | 0.05 [0.01–0.28] | 0.13 [0.02–0.42] | < 0.001 | < 0.001 | < 0.001 | |
Cardiac band HR1-2–3 | ICA | 0.84 [0.63–0.92] | 0.81 [0.56–0.91] | 0.67 [0.35–0.84] | 0.489 | < 0.001 | 0.002 |
IJV | 0.77 [0.25–0.91] | 0.63 [0.13–0.88] | 0.30 [0.1–0.87]# | < 0.001 | < 0.001 | < 0.001 | |
CSF | 0.90 [0.78–0.96] | 0.87 [0.67–0.93] | 0.72 [0.47–0.9] | 0.019 | < 0.001 | < 0.001 |
Median [range] values are provided. Free (F), paced normal (PN), paced and deep (PD) breathing are compared, and the Bonferroni-corrected p-values of the paired comparisons are reported. The comparisons between the two bands were all significant with p < 0.001, with the exception of #p = 1