title: Interaction of external and internal coordinate systems during orientation of the upper limb relative to various targets.
mesh_terms: D001132:Arm; D006112:Gravitation; D006801:Humans; D009949:Orientation / Q000502:physiology*; D010465:Perception / Q000502:physiology; D014110:Touch / Q000502:physiology; D014796:Visual Perception / Q000502:physiology