Figure 2

Stimulation positions for SF and NF. Circular marks on the stump are positions for SF, 1: phantom thumb; 2: phantom index finger; 3: phantom middle finger; 4: phantom ring finger; 5: phantom little finger. One phantom finger may have multiple positions. Rectangular marks on the upper arm are the stimulating positions for NF. The sequence of five NF positions is shown in the subfigure with cross-section view.