Figure 1

Study protocol, the tDCS + tsDCS montages used for brain stimulation and boxing task. (A) Participants were randomly assigned to either sham or real tDCS + tsDCS at 2 mA for 13 min over the first session. Then, they performed 2 tasks including spatial span (short-term memory) and double trouble (response inhibition) from CBS-cognitive platform (see “Materials and methods” section) with the intervals of 2 min’ rest. CBS-CP and the HEG data were concurrently recorded while subjects carried out the tasks. Later, they performed the boxing task and their selective attention, reaction time and Short-term memory were recorded. After 72 h, the real group received sham tDCS + tsDCS whereas sham group received real tDCS for 13 min and they performed the rest of the tasks similar to the first session. (B) 2 mA anodal tDCS pad electrodes were placed over the C3 and C4 (M1 hand area) for a course of 13 min. Both cathodal electrodes were placed bilaterally adjacent to spinous processes of C5-T1 and were not overlapping. The size of the electrodes is depicted in the Figure. (C) The participants stood at the same distance from the wall every 2 days. Ten circles appeared on the wall with random intervals. The period between the appearance of the circles on the wall and the impact of the boxers' punch on them was considered as reaction time.