Fig. 3.

Hand anesthesia and/or wrist extension affected performance of the movement task. Representative single-trial data are shown from a representative subject. Interventional conditions were no intervention (A), hand anesthesia only (B), wrist extension only (C), and wrist extension and hand anesthesia (i.e., both interventions) (D). In B and C, the indicator movement (Contact) was delayed; in D, the subject was unaware of the MCP movement and so did not respond. Note the decrease in MCP torque resulting from wrist extension (shaded regions in C and D).