Table 1.

Top: descriptive statistics (median and interquartile range) to characterise frequency distributions for each metric (t-score of the mean, off-resonance frequency), in each ROI (FC5, FP2, PZ, and grey matter – GM), and for each stimulation condition (No-tDCS, Sham-tDCS, Anodal-tDCS). Bottom: results (p-values) of the two-sample Kolmogorov-Smirnov tests to test the null hypothesis that the distributions across conditions came from the same continuous distributions. None of the statistical comparisons returned a significant result.

ROI		FC5		FP2		PZ		GM
metric	descriptive stats	median	IQR	median	IQR	median	IQR	median	IQR
t-score	No	609	189	656	180	734	253	661	283
	Sham	580	184	620	181	732	215	632	259
	Anodal	710	245	743	227	925	282	761	332
frequency	No	4.4	9.5	15.3	37.6	-4.4	13.0	3.7	15.7
	Sham	8.0	8.7	29.7	32.6	-3.1	10.0	2.6	16.5
	Anodal	12.3	8.9	39.3	31.5	-3.5	14.7	5.0	19.8
ROI		FC5		FP2		PZ		GM
t-score	No vs. Sham	0.678		0.954		0.508		0.241
	Sham vs. Anodal	0.841		0.678		0.241		0.241
	No vs. Anodal	0.996		0.841		0.954		0.954
frequency	No vs. Sham	0.996		0.996		0.996		0.954
	Sham vs. Anodal	1.000		0.996		0.841		0.954
	No vs. Anodal	1.000		0.841		1.000		0.841