Table 5.

Study 2: experimental nap (spindle analysis)

Spindle featureChannelPlaceboSodium oxybate (2.5 g)Zolpidem (10 mg)Statistic
DensityC42.40 ± 0.141.68 ± 0.213.13 ± 0.24F(2,58) = 19.64, p < 0.001, partial eta2 = 0.40
C32.78 ± 0.172.03 ± 0.253.45 ± 0.27F(2,58) = 12.45, p < 0.001, partial eta2 = 0.30
AmplitudeC416.96 ± 0.4517.31 ± 0.4616.43 ± 0.48F(2,56) = 3.75, p = 0.03, partial eta2 = 0.11
C316.78 ± 0.5217.01 ± 0.4915.63 ± 0.44F(2,56) = 7.39, p = 0.001, partial eta2 = 0.17
FrequencyC413.58 ± 0.0913.49 ± 0.0913.49 ± 0.08F(2,50) = 10.81, p < 0.001, partial eta2 = 0.20
C313.49 ± 0.1013.48 ± 0.0913.43 ± 0.09F(2,56) = 1.33, p = 0.27, partial eta2 = 0.04
Fast spindle densityC41.59 ± 0.231.23 ± 0.222.23 ± 0.27F(2,52) = 10.81, p < 0.001, partial eta2 = 0.29
C31.85 ± 0.291.45 ± 0.252.40 ± 0.30F(2,54) = 7.35, p = 0.002, partial eta2 = 0.21
Slow spindle densityC40.77 ± 0.130.64 ± 0.111.46 ± 0.26F(2,56) = 9.49, p < 0.001, partial eta2 = 0.25
C31.18 ± 0.220.80 ± 0.131.84 ± 0.39F(2,52) = 5.46, p = 0.007, partial eta2 = 0.17
Fast spindle amplitudeC416.34 ± 0.5016.77 ± 0.4815.88 ± 0.56F(2,50) = 2.49, p = 0.09, partial eta2 = 0.09
C316.49 ± 0.6816.32 ± 0.5515.16 ± 0.50F(2,54) = 2.74, p = 0.07, partial eta2 = 0.09
Slow spindle amplitudeC417.20 ± 0.5217.30 ± 0.4316.66 ± 0.50F(2,56) = 1.84, p = 0.168, partial eta2 = 0.06
C316.94 ± 0.5217.28 ± 0.4815.64 ± 0.42F(2,56) = 10.36, p < 0.001, partial eta2 = 0.27