Table 1.
Outline of the 26 hand movements used in the motor task. Instructional videos presented in Supplementary Video S1
| Hand movements | |
|---|---|
| Abduct fingers | Pinch: thumb and little finger |
| Cylinder grip | Pinch: thumb and index finger |
| Hook grip | Pinch: thumb and middle finger |
| Spherical grip | Pinch: thumb and ring finger |
| Index finger flexion (45°) | Ring finger flexion (45°) |
| Index finger flexion (90°) | Ring finger flexion (90°) |
| Index & middle finger flexion (90°) | Ring and little finger flexion (90°) |
| Index finger and thumb roll | Rock fingers |
| Little finger flexion (45°) | Squeeze: thumb and fingers |
| Little finger flexion (90°) | Abduct thumb |
| Middle finger flexion (45°) | Extend thumb |
| Middle finger flexion (90°) | Flex thumb |
| Middle & ring finger flexion (90°) | Twiddle: thumb and index finger |