In the fast tapping tasks, patients showed a lower tapping rate (mean rate: 3.15 ± 0.97/s, Fig. 2Ci) and higher tapping variability (Table 1) than controls (mean rate: 4.20 ± 0.51/s). Feedback improved the tapping rate but not the tapping variability in both groups (Table 1). For the mean completion ratio, ANOVA revealed a significant interaction effect between group and feedback (Table 1). As shown in Fig. 2Cii, the completion ratio was lower in patients than in controls, both with and without feedback.
