Figure 1 .
Phase encoding experimental design. (a) Between-digits session. Points with the same color were stimulated together. There are2 directions: forward (D1-D2-D3-D4-D5-Palm) and backward (Palm-D5-D4-D3-D2-D1). (b) Within-digits session. There are also 2 directions: forward (P1-P2-Palm) and backward (Palm-P2-P1). All 5 phalanges with the same shape were stimulated together.