Fig. 14

PCs distance from PRE, on GT pointing task, for the two tasks GDM and PCT. PC subspaces mean distance and standard error with respect to first repetition in PRE phase (trial 1) over the 10 participants when pointing toward GT. In red, spontaneous variability mean values and standard deviation of spontaneous variability experiment with 5 healthy subjects of Section “Quantification of the human spontaneous variability within the exoskeleton”. Asterisks * mean significant difference w.r.t. spontaneous variability after non parametric one-sample sign test