Table 1. Game RT and accuracy with improvements within- and between groups.

RT (Raw values)
	Day 1	Day 2	2 months later
tDCS	11.81 (4.27)	10.79 (3.43)	9.63 (2.91)
Sham	12.99 (3.45)	11.82 (4.85)	12.07 (4.02)
Improvement within groups (%)
Time	Day 2 vs. Day 1	2 months later vs. Day 2	2 months later vs. Day 1
tDCS	8.6	10.8	18.5
sham	9	−2.1	7
Difference between groups (tDCS-sham, %)
Time	Day 1	Day 2	2 months later
	1.7	8.7	20.3
Accuracy (Raw Values)
	Day 1	Day 2	2 months later
tDCS	0.0327 (0.0071)	0.0287 (0.0072)	0.0271 (0.0081)
Sham	0.0343 (0.0093)	0.0287 (0.0054)	0.03000 (0.0059)
Improvement within groups (%)
Time	Day 2 vs. Day 1	2 months later vs. Day 2	2 months later vs. Day 1
tDCS	12.2	5.6	17.1
sham	16.3	4.5	12.5
Difference between groups (tDCS-sham, %)
Time	Day 1	Day 2	2 months later
	0.5	0	0.1

Improvements within and between groups (tDCS vs. sham) are shown as % changes. Data are depicted as mean ± SD.