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Table 2 Results of repeated measures ANOVAs for assessing time-on-task effect on ANS parameters

From: Impact of brain arousal and time-on-task on autonomic nervous system activity in the wake-sleep transition

  Heart rate Skin conductance level
Time block (min) Effect (η 2p ) Time block (min) Effect (η 2p )
1–30 31–60 61–90 91–120 1–30 31–60 61–90 91–120
Ignored condition a
A1 65.63 (7.38) 64.04 (7.60) 63.97 (7.59) 64.52 (7.78) F3,63 = 5.370** (0.204) 3.75 (4.40) 3.81 (4.82) 4.02 (4.73) 4.37 (5.97) F1.183,24.852 = 0.472 (0.022)
A2 62.30 (6.96) 60.74 (7.73) 60.90 (7.31) 61.91 (8.20) F3,42 = 1.574 (0.101) 3.78 (4.80) 3.57 (5.39) 3.84 (5.12) 4.65 (7.13) F1.124,15.742 = 0.493 (0.034)
B1 61.79 (6.85) 60.26 (6.96) 60.18 (7.76) 60.97 (8.01) F3,105 = 3.381* (0.088) 2.77 (3.26) 2.68 (3.21) 2.94 (3.53) 3.55 (5.22) F1.153,40.351 = 2.263 (0.061)
B2/3 61.42 (6.61) 59.87 (6.52) 59.52 (6.75) 60.89 (8.36) F1.981,45.573 = 2.314 (0.091) 2.31 (3.27) 2.33 (3.56) 2.59 (3.60) 2.78 (3.68) F1.725,39.682 = 2.764 (0.107)
Attended condition b
A1 65.76 (9.49) 65.65 (9.55) 65.37 (9.18) 65.21 (9.10) F2.395,74.258 = 0.493 (0.016) 2.66 (1.72) 2.54 (2.35) 2.76 (3.15) 2.66 (2.29) F1.366,42.343 = 0.208 (0.007)
B1 63.45 (9.50) 62.16 (9.01) 61.65 (9.37) 61.81 (8.78) F2.023,66.757 = 5.509** (0.143) 2.51 (1.48) 2.41 (1.95) 2.70 (3.04) 2.81 (2.68) F1.280,42.247 = 0.746 (0.022)
B2/3 60.00 (8.08) 58.71 (7.31) 58.27 (7.67) 59.21 (8.45) F3,54 = 3.059* (0.145) 2.03 (1.20) 1.86 (1.06) 1.78 (0.92) 1.85 (0.96) F1.378,24.810 = 1.323 (0.068)
  1. Standard deviations are presented in parentheses
  2. *p < .05; **p < .01; ***p < .001
  3. aThe sample sizes in examination of time-on-task effect in the ignored condition during certain stage were different: n = 22 in stage A1, n = 15 in stage A2, n = 36 in stage B1, n = 24 in stage B2/3
  4. bThe sample sizes in examination time-on-task effect in the attended condition during certain stage were different: n = 32 in stage A1, n = 34 in stage B1, n = 19 in stage B2/3