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Table 3 Comparison of absolute EEG spectral power among the experimental groups (μν2)

From: Sleep EEG characteristics associated with total sleep time misperception in young adults: an exploratory study

Variable

GS (n = 10)

IWHM (n = 18)

IWLM (n = 19)

Statistics

Frontal derivation

 Delta (1–4 Hz)

46.47 ± 21.05

37.61 ± 15.30

46.65 ± 25.95

F = 0.981, P = 0.383

 Theta (4–8 Hz

2.90 [2.29, 4.22]

3.23 [2.67, 3.99]

4.91 [2.59, 5.83]

H = 3.481, P = 0.175

 Alpha (8–12 Hz)

1.87 [1.16, 3.37]

2.53 [1.55, 2.99]

2.78 [1.97, 3.89]

H = 2.693, P = 0.260

 Sigma (12–16 Hz)

0.80 [0.55, 1.27]

1.09 [0.69, 1.56]

1.40 [0.88, 1.76]

H = 4.137, P = 0.126

 Beta (16–32 Hz)

0.71 [0.57, 0.99]

1.08 [0.69, 1.80]

1.06 [0.79, 1.50]

H = 4.062, P = 0.131

 Beta /Delta

0.01 [0.01, 0.03]

0.03 [0.02, 0.04] a

0.03 [0.02, 0.04]

H = 6.904, P = 0.032

 Beta/Theta

0.27 [0.17, 0.37]

0.34 [0.23, 0.53]

0.25 [0.18, 0.36]

H = 1.907, P = 0.385

 Alpha/Delta

0.04 [0.03, 0.08]

0.07 [0.04, 0.09]

0.07 [0.05, 0.11]

H = 3.086, P = 0.214

 Alpha/Theta

64.00 ± 16.43

76.60 ± 41.44

74.33 ± 30.73

F = 0.487, P = 0.618

Central derivation

 Delta (1–4 Hz)

37.99 ± 12.36

33.89 ± 19.01

46.48 ± 20.94

F = 2.154, P = 0.128

 Theta (4–8 Hz

4.77 [3.37, 4.99]

4.11 [3.21, 4.63]

4.93 [2.98, 8.85]

H = 2.872, P = 0.238

 Alpha (8–12 Hz)

2.51 [1.66, 3.24]

2.79 [1.89, 3.52]

2.70 [1.83, 4.02]

H = 0.710, P = 0.701

 Sigma (12–16 Hz)

1.43 [1.04, 1.84]

1.66 [1.21, 2.76]

1.75 [1.37, 2.51]

H = 2.625, P = 0.269

 Beta (16–32 Hz)

0.81 [0.66, 1.25]

1.29 [0.87, 1.62]

1.16 [0.72, 1.65]

H = 2.139, P = 0.343

 Beta/Delta

0.02 [0.02, 0.04]

0.04 [0.02, 0.06]

0.03 [0.02, 0.04]

H = 3.087, P = 0.214

 Beta/Theta

0.18 [015, 0.31]

0.28 [0.20, 0.43]

0.20 [0.15, 0.35]

H = 2.385, P = 0.303

 Alpha/Delta

0.07 [0.04, 0.09]

0.08 [0.05, 0.14]

0.06 [0.05, 0.09]

H = 2.632, P = 0.268

 Alpha/Theta

0.57 [0.47, 0.66]

0.58 [0.51, 0.92]

0.52 [0.42, 0.75]

H = 1.774, P = 0.412

  1. GS: good sleeper; IWLM: insomnias with a low mismatch; IWHM: insomnias with a high mismatch. The statistical value H represents the use of a Kruskal–Wallis non-parametric analysis among three group using a Bonferroni correction for post-hoc analysis, while the statistical value F represents the use of a one-way ANOVA using the least significant difference test for post-hoc analysis
  2. aP < 0.05 versus GS. There was no difference between the IWHW and IWLW groups