Fig. 2

MINT conditioning improved game performance and decreased muscle co-activation. A Mean (± SEM) normalized EMG envelope in the 2 s before successful target capture (“Reward”) for all runs in days 1 (top) and 6 (bottom) for subject 1. Left plots show AM targets, right plots show RF targets (shown in insets). This participant learned to reduce activity in the non-targeted muscle by day 6. B, C Time-to-target and success rate (mean ± SEM) over participants improved over the course of MINT conditioning. D Mean co-activation decreased during conditioning, especially from baseline co-activation obtained during walking