Force adaptation transfers to untrained workspace regions in children

摘要: When humans perform goal-directed arm movements under the influence of an external damping force, they learn to adapt these dynamics. After removal force field, reveal kinematic aftereffects that are indicative a neural controller still compensates no longer existing force. Such behavior suggests adult human nervous system uses representation inverse dynamics control upper-extremity motion. Central notion dynamic model (IDM) is learning generalizes. Consequently, should be observable even in untrained workspace regions. Adults have shown such behavior, but ontogenetic development this process remains unclear. This study examines adaptive children and investigates whether field one hemifield right has effect on adaptation other hemifield. Thirty (aged 6–10 years) ten adults performed 30° elbow flexion two conditions (negative null). We found compensate transferred opposite hemifield, which indicates limb rather than association visited space experienced was acquired. Aftereffects were more pronounced younger readaptation null-force condition prolonged. finding consistent with view IDMs imprecise representations actual It acquisition developmental achievement motor inherently flexible enough any novel within limits organism’s biomechanics.