Table 1: Difference threshold.

Standard stimulus force [N] Thumb Index finger
Proximal phalanx Metacarpal head Middle phalanx Proximal phalanx Metacarpal head
1 0.317 0.321 0.274 0.311 0.341
2 0.418 0.42 0.357 0.374 0.382
3 0.458 0.499 0.425 0.421 0.432