Skip to main content

Advertisement

Table 5 REM sleep parameters by different sleep cycles and nights for frequent nightmare sufferers (NM) and healthy controls (HC)

From: Nightmares affect the experience of sleep quality but not sleep architecture: an ambulatory polysomnographic study

Cycle Variable Night 1 Night 2 Night 3
NM HC NM HC NM HC
1 Cycle length 103.47 ± 32.06 104.70 ± 19.61 94.05 ± 18.67 110.08 ± 51.54 100.26 ± 21.10 97.94 ± 18.08
REM duration 13.08 ± 13.85 13.94 ± 7.96 13.94 ± 10.98 13.52 ± 10.98 14.02 ± 6.91 14.11 ± 9.48
REM density 15.13 ± 6.76 13.57 ± 6.65 14.76 ± 7.20 13.73 ± 8.53 13.57 ± 6.30 13.24 ± 6.30
2 Cycle length 106.64 ± 26.22 96.30 ± 22.13 93.05 ± 27.12 90.39 ± 25.86 99.67 ± 12.02 101.36 ± 16.59
REM duration 24.35 ± 15.42 20.94 ± 10.55 15.29 ± 9.25 21.76 ± 10.73 25.44 ± 8.78 25.58 ± 9.70
REM density 20.23 ± 8.72 18.90 ± 8.33 17.35 ± 9.53 19.56 ± 9.60 21.48 ± 10.6 19.21 ± 10.49
3 Cycle length 92.49 ± 22.09 88.00 ± 37.16 80.72 ± 22.00 83.75 ± 21.22 80.77 ± 15.93 77.56 ± 17.62
REM duration 20.58 ± 11.60 21.53 ± 8.01 23.35 ± 10.27 18.96 ± 15.31 24.26 ± 13.71 23.93 ± 12.21
REM density 19.77 ± 9.57 21.65 ± 7.76 21.22 ± 8.60 21.25 ± 12.29 18.83 ± 6.44 18.37 ± 5.92
4 Cycle length 83.00 ± 10.10 79.83 ± 13.96 77.37 ± 9.31 84.16 ± 8.37 72.62 ± 8.26 66.16 ± 25.15
REM duration 28.00 ± 14.77 32.18 ± 8.92 22.61 ± 15.64 27.06 ± 11.14 21.11 ± 10.25 23.12 ± 12.69
REM density 21.15 ± 8.95 23.26 ± 9.01 21.52 ± 6.59 24.62 ± 8.94 22.46 ± 13.31 30.82 ± 9.35
  1. Results are presented as mean ± standard deviation; cycle length and REM duration are presented in minutes.