Table 4 LME model results for transition latency in offline stimulation condition.

From: Distinct online and offline effects of alpha and beta transcranial alternating current stimulation (tACS) on continuous bimanual performance and task-set switching

Transition latency Wald statistics Type III sums of squares test
Parameter estimates (SE) t-value (df) Pr(>|t|) F-value (df) Pr(>F)
a) continuation transitions
Fixed effects
STIMULATION FREQUENCY [20 Hz] 1.51 (4.2) 0.36 (586.3) 0.72 0.13 (1, 586.3) 0.72
TIME centred 1.82 (3.0) 0.62 (585.2) 0.54 0.45 (1, 585.3) 0.5
TARGET FREQUENCY centred −57.70 (6.7) −8.67 (103.2) 0.000*** 75.06 (1, 103.2) 0.000***
STIMULATION FREQUENCY*TIME centred [20 Hz] −2.61 (4.2) −0.63 (585.2) 0.53 0.39 (1, 585.2) 0.53
Random effects Variance component (SD)   ω2 = 0.26
  Intercept|subject level 254 (15.94)  
  Residual 2655 (51.53)  
b) switching transitions
Fixed effects
STIMULATION FREQUENCY [20 Hz] −25.89 (11.97) −2.16 (585.8) 0.03* 4.67 (1, 585.8) 0.03*
TIME centred 0.20 (8.46) 0.02 (585.0) 0.98 0.87 (1, 585.0) 0.35
TARGET FREQUENCY centred 2.11 (21.31) 0.10 (225.5) 0.92 0.01 (1, 225.5) 0.92
STIMULATION FREQUENCY*TIME centred [20 Hz] −17.45 (11.96) −1.46 (585.0) 0.15 2.13 (1, 585.0) 0.15
Random effects Variance component (SD)   ω2 = 0.21
  Intercept|subject level 4883 (69.88)  
  Residual 21734 (147.42)  
  1. Parameter estimates are given for factor levels given in squared brackets with respect to 10 Hz STIMULATION FREQUENCY as reference cate gories. Asterisks indicate level of significance at ***p < 0.0001, **p < 0.01, *p < 0.05 estimated for LME models with Satterthwaite approximation. For both models the number of observations was 912 for 19 groups, i.e. subject.