Table 2

 Absolute electroencephalographic spectral power (μV2) in five frequency bands in prone and supine positions during quiet and active sleep

Frequency band (Hz)Quiet sleepActive sleep
ProneSupinep ValueProneSupinep Value
Values are mean (SD).
0.01–182.27 (36.37)95.19 (59.77)0.26158.24 (58.04)187.63 (75.94)<0.0003
1–414.30 (5.14)14.99 (6.85)0.2817.72 (5.90)18.30 (6.37)0.08
4–81.67 (0.92)1.85 (1.45)0.341.68 (0.64)1.90 (0.89)<0.0005
8–120.73 (0.38)0.80 (0.51)0.290.69 (0.28)0.81 (0.43)<0.005
12–240.74 (0.37)0.83 (0.54)0.231.09 (0.44)1.29 (0.67)<0.001