Table 1 Correlation of the hourly z-scored-average power of different frequency bands and the percentage of the mean REMS and wakefulness for the same hour.

REMS

r

 − 0.86

 − 0.83

 − 0.82

 − 0.79

95% Confidence Interval

 − 0.94 to − 0.68

 − 0.93 to − 0.64

 − 0.92 to − 0.61

 − 0.90 to − 0.56

R squared

0.73

0.70

0.67

0.62

P (two–tailed)

 < 0.0001

 < 0.0001

 < 0.0001

 < 0.0001

Wakefulness

r

0.90

0.93

0.91

0.90

95% Confidence Interval

0.78 to 0.96

0.83 to 0.97

0.80 to 0.96

0.77 to 0.96

R squared

0.81

0.86

0.84

0.80

P (two–tailed)

 < 0.0001

 < 0.0001

 < 0.0001

 < 0.0001