Fig. 9

CPAs of the end-effector-pair-wise comparison of total muscle synergy sets. CPAs were averaged across participants (means indicated by the black circles) and ranked from the best matching dimensions (D) to the least matching dimensions between two end-effectors. Each panel presents the results of the comparison of subspaces spanned by the total muscle synergy sets of two end-effectors. Vertical bars represent the 95% confidence interval determined with bootstrap statistics, whereas colored dots represent data of individual participants. Asterisks indicate mean CPAs that are significantly different from threshold (horizontal dashed line, significance determined with the 95% confidence interval)