A representative subject’s performance traces by in a condition that modifies object-subject and object-body relations.

<p>(A) Object roll; (B) Compensatory moment (M<i>com</i>, solid line) and target M<i>com</i> (dotted line, plotted as same sign as M<i>com</i> for graphical purposes); (C) Center of pressure (COP) by the thumb (dotted line) and the index finger (solid line); (D) Load force (F<i>tan</i>) by the thumb (dotted line) and the index finger (solid line). Data are shown for the first (left panel) and last pre-rotation trial (middle panel) with the object’s CoM on the right and, following a rotation that modifies both the relation between the object and body and object and hand (Condition 5), the first post-rotation trial (right panel). The vertical dotted line represents the lift onset time.