Fig. 8.
Across-subjects average index of synergy (ΔVZ; top), variance within the uncontrolled manifold (VUCM; middle), and variance orthogonal to the uncontrolled manifold (VORT; bottom) for hand-level referent coordinate (XRH)-stabilizing ascending synergy due to covariation of the finger-level reference coordinate (XRf). Open bars are data recorded under full visual feedback; solid bars are data recorded after altered visual feedback. Dashed horizontal line indicates the ΔVZ critical value. Error bars are SE.