Figure 3.

Mean HG power differences between S1 and M1 electrodes across all subjects during (A) hand grasping and (B) elbow flexion [mean power values across all subjects: S1 hand grasping = 0.54 ± 0.095 (mean ± standard error), M1 hand grasping = 0.17 ± 0.044, S1 elbow flexion = 0.34 ± 0.073, M1 elbow flexion = 0.011 ± 0.054]. Power values of all sessions from each subject were averaged. The y-axis (normalized power) uses an arbitrary unit scale. (C) Differences in classification accuracies between S1 and M1 features across all subjects. Black dots indicate the respective power or accuracy level of each subject. ^*p < 0.05 (Wilcoxon signed-rank test)