Fig. 2: Total time (ms) for the nine training blocks performed between the baseline (BASE) and immediate posttest (Post-Imm) blocks during which real (R-PMd, L-PMd) or sham (RP-S, IP-S) stimulation was administered during repetitive training (R-PMd, L-PMd, PR-S) and interleaved training (IP-S).

No stimulation was present during any tests including 6-h post (Post-6 h), 24-h post (Post-24 h), and 72-h post (Post-72 h). Error bars are standard errors.