Fig. 5

Results on joint angle standard deviations. Each grey line corresponds to a subject. Boxes show first and third quartiles, whiskers show min and max values. ShFlex shoulder flexion, ShAbd shoulder abduction, HumMed humeral lateral rotation, ElFlex elbow flexion, ForSup forearm supination, UlnDev ulnar deviation, WrExt wrist extension. Blue: condition C+; purple: condition C−; red: condition N. Solid: virtual arm actual behavior (C+, C− and N); hatch pattern: mimicked real arm motion (MC+ and MC−). Significant differences are indicated with stars: *\(\hbox {p} < 0.0167\); **\(\hbox {p} < 0.01\); ***\(\hbox {p} < 0.001\)