Fig. 1

Schematic illustration of the experimental procedure. Sixty participants signed consent. There were three participants excluded before completing the baseline. Sixty participants were randomized and then divided into three groups. 2-mA anodal HD-tDCS for 20 min was applied for 2 weeks (5 consecutive days in each week) on the left DLPFC (20 patients, first group) and on the DATL (20 patients, second group). The third group (20 patients) received the Sham stimulation. All 60 patients completed a 2-week treatment and 1-month and 3-month follow-up. The CONSORT/2010 statement was utilized as a model to construct this figure