Fig. 2.

Performance during the ballistic thumb acceleration task. A. Absolute peak acceleration in the baseline epoch on day 1 was similar across the three TDCS groups. B. The relative increase in acceleration on day 1 and day 2 was similar across the three TDCS groups, but greater on day 1 than day 2. Circles reflect individual data points whilst solid lines represent the group means. C. The group with TDCS applied in with an AP current direction experienced a reduction in peak acceleration from the last epoch of day 1 to the baseline epoch of day 2 by comparison with the groups receiving PA and Sham TDCS. As in B, the circles reflect individual data points whilst solid lines represent the group means. D. Group mean acceleration for each epoch of practice across the 2 days. *P < 0.05 between groups.