TABLE I.

Posture Sets Used in the Study

Posture Set	No. of Classes	Classes
1 of 10	10	Thumb, Index, Middle, Ring, and Small Finger Flexion (T,I,M,R,S), Wrist Flexion (WF), Finger Abduction (Ab), Finger Adduction (Ad), Thumb Opposition (TO), Rest (Re)
Grasps	5	Fist (F), Pinch (Pi), Point (Po), Finger Abduction (Ab), Rest (Re)
Functional	4	Fist (F), Pinch (Pi), Point (Po), Rest (Re)

P2 performed three experiment sessions of the virtual task with the 1 of 10 and grasps posture sets, while P1 performed one session with each set. The functional posture set was used by both participants to control robotic prostheses and for the static arm position test performed by P2.