Statistical table
| Line | Analysis (variables) | Type of test | Statistic | p-value and confidence |
|---|---|---|---|---|
| Stimulation | ||||
| a1 | Subject comfort (H-Coil vs Figure-8) | Unpaired t test | t = −0.58; DoF = 26 | p = 0.56; CI = (−1.61,0.89) |
| fMRI (BOLD signal) | ||||
| a2 | fMRI (time, coil) for target ROI | Two-way ANOVA Main effect TIME Main effect COIL | F = 0.121; DoF = (2,17) F = 0.04; DoF = (1,17) F = 0.90; DoF = (2,17) | p = 0.9 p = 0.8 p = 0.4 |
| a3 | fMRI (time, coil, ROI) | Three-way ANOVA | F = 2.66; DoF = (4,34) | p = 0.49; ηp2 = 0.25 |
| a4 | fMRI (time, coil) | Two-way ANOVA | F = 3.59; DoF = (2,17) | p = 0.50; ηp2 = 0.30 |
| a5 | Post hoc on a4 (OFC) H-Coil vs Figure-8 H-Coil vs sham | Simple main effect Simple main effect | Mean diff = 0.28 Mean diff = 0.31 | p = 0.048†; CI = (0.00,0.55) p = 0.023†; CI = (0.05,0.57) |
| a6 | Post hoc on a4 (pgACC) H-Coil vs Figure-8 H-Coil vs sham | Simple main effect Simple main effect | Mean diff = 0.13 Mean diff = 0.13 | p = 0.045†; CI = (0.00,0.26) p = 0.035†; CI = (0.01,0.26) |
| a7 | Post hoc on a4 (insula) H-Coil vs Figure-8 H-Coil vs sham | Simple main effect Simple main effect | Mean diff = 0.11 Mean diff = 0.11 | p = 0.13†; CI = (−0.06,0.42) p = 0.26†; CI = (−0.10,0.36) |
| fMRI (task performance) | ||||
| a8 | IGT behavior (coil, time) | Two-way ANOVA | F = 0.86; DoF = (2,17) | p = 0.44 |
| Behavior (coil) | ||||
| a9 | mVAS (time, coil) | Two-way ANOVA | F = 5.69; DoF = (2,26) | p = 0.009; ηp2 = 0.3 |
| a10 | Post hoc on a9 (H-Coil) | Simple main effect | F = 12.69; DoF = (1,27) | p = 0.001; r2 = 0.4 |
| a11 | ACQ (time, coil) | Two-way ANOVA | F = 2.86; DoF = (2,26) | p = 0.076; ηp2 = 0.18 |
| a12 | Post hoc on a11 | Main effect TIME Main effect COIL | F = 8.12; DoF = (1,27) F = 0.11; DoF = (2,27) | p = 0.01 p = 0.9 |
| a13 | PANAS (time, coil) | Two-way ANOVA | F = 0.28; DoF = (2,26) | p = 0.76; ηp2 = 0.02 |
| Extended material | ||||
| fMRI per ROI (post hoc) | ||||
| a14 | OFC (coil, time) | Two-way ANOVA | F = 3.52; DoF = (2,17) | p = 0.048; ηp2 = 0.30 |
| a15 | pgACC (coil, time) | Two-way ANOVA | F = 3.68; DoF = (2,17) | p = 0.047; ηp2 = 0.31 |
| a16 | Insular cortex (coil, time) | Two-way ANOVA | F = 0.18; DoF = (2,17) | p = 0.18; ηp2 = 0.18 |
| Behavior (frequency, side) | ||||
| a17 | VAS (side, frequency, time) | Three-way ANOVA | F = 5.81; DoF = (1,35) | p = 0.021; ηp2 = 0.15 |
| a18 | VAS (frequency, time) | Two-way ANOVA | F = 0.50; DoF = (1,35) | p = 0.04; ηp2 = 0.01 |
| a19 | VAS (side, time) | Two-way ANOVA | F = 0.51; DoF = (1,35) | p = 0.51; ηp2 = 0.01 |
| a20 | Post hoc on a19, low frequency | Two-way simple-interaction | F = 1.48; DoF = (1,35) | p = 0.23; r2 = 0.04 |
| a21 | Post hoc on a19, high frequency | Two-way simple-interaction | F = 4.76; DoF = (1,35) | p = 0.01; r2 = 0.12 |
| a22 | Post hoc on a19, right LPFC | 2nd order simple main effects | F = 22.2; DoF = (1,17) | p = 0.001; r2 = 0.56 |
| a23 | ACQ (side, frequency, time) | Three-way ANOVA | F = 0.12; DoF = (1,35) | p = 0.73; ηp2 = 0.10 |
| a24 | ACQ (frequency, time) | Two-way ANOVA | F = 4.19; DoF = (1,35) | p = 0.048; ηp2 = 0.11 |
| a25 | ACQ (side, time) | Two-way ANOVA | F = 1.27; DoF = (1,35) | p = 0.27; ηp2 = 0.04 |
| a26 | Post hoc on a22, high frequency | Simple main effect | F = 12.2; DoF = (1,17) | p = 0.001; r2 = 0.64 |
| a27 | PANAS (side, frequency, time) | Three-way ANOVA | F = 0.02; DoF = (1,35) | p = 0.90; ηp2 = 0.00 |
| a28 | PANAS (frequency, time) | Two-way ANOVA | F = 1.90; DoF = (1,35) | p = 0.18; ηp2 = 0.05 |
| a29 | PANAS (side, time) | Two-way ANOVA | F = 0.35; DoF = (1,35) | p = 0.56; ηp2 = 0.00 |
All data were checked for normal distribution (see Materials and Methods, Statistical data and analysis).
CI: confidence interval.
DoF: degrees of freedom.
IGT: Iowa Game Task.
mVAS, ACQ, PANAS: behavioral questionnaires.
OFC, pgACC, insular: regions of interest.
↵† uncorrected p-value (multiply p-value by three for Bonferroni correction).