Fig. 3

Raw EMGs of the targeted muscles and their signal-to-signal ratio (SSR) across the training sessions. A, Rectified EMG signals of brachioradialis (BRD; blue) and biceps brachii (medial head, BI; red) collected during trials of the first (T1) and last (T18) training sessions from a representative participant’s data. B, SSR between the activation-targeted (AT) and suppression-targeted (ST) muscle measured at T1 (first training), T7 (after two weeks of training), T13 (after four weeks of training), and T18 (last training) for each of BRD-AT and BI-AT trials (Wilcoxon Rank-Sum test; *, p < 0.05)