Table 2 Absolute power of alpha and beta in the frontal, the central, and the posterior area during eyes closed
Areas | Hemispheres | Bands | Groups | Means (SD)/median (Q1; Q3) | Within group comparison p-value (effect size) | Between groups comparison p-value (effect size) | Interaction effect (Time x Group) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Pre | Post | F/U | Overall | Pre vs Post | Pre vs F/U | Post vs F/U | Overall | At pre | At Post | At F/U | |||||
Frontal | Lesioned | Alpha | Anodal | 7.97 (4.69;25.67) | 13.60 (3.95;33.07) | 11.53 (7.19;28.79) | 0.005 | 0.053 (0.37) | 0.006* (0.37) | 1.000 (0.04) | – | 0.158 (0.06) | 0.455 (0.28) | 0.245 (0.44) | – |
Sham | 14.16 (10.14;18.05) | 16.53 (11.88;29.20) | 19.26 (13.67;30.82) | 0.127 | – | – | – | ||||||||
Beta | Anodal | 6.67 (4.22;11.81) | 6.68 (5.41;13.51) | 9.11 (6.66;12.48) | 0.155 | – | – | – | – | 0.455 (0.40) | 0.803 (0.10) | 0.125 (0.59) | – | ||
Sham | 6.31 (5.39;9.36) | 7.92 (5.57;9.62) | 7.71 (4.75;9.32) | 0.936 | – | – | – | ||||||||
Non-lesioned | Alpha | Anodal | 7.30 (4.59;24.53) | 12.68 (3.95;30.07) | 9.05 (7.11;28.02) | 0.002 | 0.010* (0.38) | 0.006* (0.37) | 1.000 (0.02) | – | 0.158 (0.13) | 0.300 (0.39) | 0.184 (0.51) | – | |
Sham | 12.94 (10.25;17.14) | 20.91 (12.46;26.86) | 20.43 (13.64;31.27) | 0.155 | – | – | – | ||||||||
Beta | Anodal | 7.08 (4.18;9.26) | 7.96 (4.90;15.37) | 8.54 (6.83;10.84) | 0.008 | 0.204 (0.51) | 0.006* (0.64) | 0.604 (0.09) | – | 0.934 (0.09) | 0.967 (0.02) | 0.431 (0.30) | – | ||
Sham | 7.11 (4.85;7.84) | 7.52 (5.55;10.77) | 7.55 (6.05;9.58) | 0.344 | – | – | – | ||||||||
Central | Lesioned | Alpha | Anodal | 14.11 (5.39;28.43) | 22.07 (4.06;34.35) | 13.05 (10.66;39.23) | 0.041 | 0.085 (0.44) | 0.085 (0.36) | 1.000 (0.08) | – | 0.320 (0.03) | 0.836 (0.08) | 0.407 (0.31) | – |
Sham | 15.46 (11.35;22.49) | 22.29 (12.68;27.84) | 21.85 (15.65;31.09) | 0.189 | – | – | – | ||||||||
Beta | Anodal | 7.75 (5.94;10.55) | 9.00 (6.78;14.93) | 11.26 (8.28;14.81) | 0.038 | 0.604 (0.29) | 0.032 (0.60) | 0.604 (0.35) | – | 0.590 (0.44) | 0.740 (0.13) | 0.074 (0.70) | – | ||
Sham | 7.046 (3.77;10.84) | 10.04 (5.60;13.12) | 9.28 (4.81;12.41) | 0.344 | – | – | – | ||||||||
Non-lesioned | Alpha | Anodal | 10.46 (6.04;25.71) | 19.59 (4.26;38.04) | 13.63 (10.52;34.90) | 0.002 | 0.010* (0.44) | 0.006* (0.38) | 1.000 (0.05) | – | 0.263 (0.18) | 0.431 (0.30) | 0.199 (0.49) | – | |
Sham | 17.11 (11.03;27.42) | 26.31 (16.13;28.76) | 28.95 (17.00;34.98) | 0.038 | 0.134 (0.62) | 0.053 (0.70) | 1.000 (0.02) | ||||||||
Beta | Anodal | 7.57 (4.73;9.15) | 8.61 (8.96;14.55) | 9.49 (7.26;14.36) |  < 0.001 | 0.019 (0.48) |  < 0.001* (0.66) | 0.820 (0.20) | – | 0.934 (0.04) | 0.967 (0.02) | 0.455 (0.28) | – | ||
Sham | 8.33 (4.09;11.02) | 9.03 (6.00;13.32) | 9.98 (6.02;12.24) | 0.420 | – | – | – | ||||||||
Posterior | Lesioned | Alpha | Anodal | 14.90 (7.97;23.28) | 22.18 (4.12;45.81) | 15.68 (9.19;53.40) | 0.038 | 0.053 (0.53) | 0.134 (0.45) | 1.000 (0.05) | – | 0.934 (0.22) | 0.709 (0.14) | 0.740 (0.13) | – |
Sham | 13.83 (9.40;22.18) | 17.80 (10.43;35.68) | 18.78 (14.52;34.86) | 0.085 | – | – | – | ||||||||
Beta | Anodal | 5.61 (4.54;9.55) | 7.01 (6.09;9.29) | 7.99 (6.94;11.54) | 0.002 | 0.134 (0.36) | 0.002* (0.57) | 0.432 (0.19) | – | 0.619 (0.35) | 0.967 (0.02) | 0.561 (0.22) | – | ||
Sham | 5.99 (3.21;9.11) | 7.82 (4.47;10.57) | 8.00 (4.25;10.93) | 0.127 | – | – | – | ||||||||
Non-lesioned | Alpha | Anodal | 14.72 (7.64;19.76) | 18.92 (5.35;53.24) | 15.59 (8.41;42.43) | 0.002 | 0.003* (0.55) | 0.019 (0.45) | 1.000 (0.09) | – | 0.868 (0.04) | 0.740 (0.13) | 0.361 (0.35) | – | |
Sham | 13.85 (9.00;28.32) | 22.61 (15.36;41.57) | 27.66 (14.11;44.21) | 0.005 | 0.053 (0.70) | 0.006* (0.77) | 1.000 (0.15) | ||||||||
Beta | Anodal | 5.71 (4.41;11.18) | 7.75 (5.94;9.51) | 8.51 (7.10;10.67) |  < 0.001 | 0.019 (0.38) |  < 0.001* (0.58) | 0.820 (0.23) | – | 0.868 (0.24) | 1.000 (0.01) | 0.836 (0.08) | – | ||
Sham | 6.75 (3.23;8.73) | 7.11 (4.40;13.58) | 7.77 (5.69;13.52) | 0.031 | 0.204 (0.68) | 0.032 (0.75) | 1.000 (0.15) | ||||||||