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Group differences between treatment conditions on ([tPCS + sham]) and tDCS: (a) on theta frontal functional connectivity, (b) on CRS-R total score, and (c) on CRS-R modified index. Calculated with unpaired Wilcoxon signed-rank test. tPCS = transcranial pulsed current stimulation, sham = sham, tDCS = transcranial direct current stimulation.
