From: Kinematic synergies of hand grasps: a comprehensive study on a large publicly available dataset
Study | Subjects | Description of the task | Summary of the results |
---|---|---|---|
Santello et al. [4] | 5 | Grasp and use of 57 imagined objects | Two main synergies accounted for more than 80% of the overall variation. |
Mason et al. [9] | 5 | 5 reach-to-grasp movements with similar objects | First synergy accounted for more than 97% of the total variance. |
Liu et al. [10] | 10 | Grasp six objects changing relative position of hand-objects | The first six PCs accounted for more than 80% of the total variance. |
Jarrassé et al. [11] | 10 | Grasp postures of nine objects | Four postural synergies were found: the first and second PCs accounted for approximately 90% of the total variance. |
Patel et al. [8] | 10 | Twenty-five grasping movements | Only 10 DoF were considered. First synergy accounted for approximately 54% of the variance. |
Thakur et al. [6] | 8 | Haptic exploration over 50 objects Grasping postures with few objects | Seven synergies were extracted for the explanation of over 90% of the total variance. |
Todorov et al. [12] | 6 | Seven tasks | Between two and four synergies (depending on the task) accounted for 85–95% of the overall variance. |