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. Author manuscript; available in PMC: 2016 Mar 1.
Published in final edited form as: Exp Brain Res. 2014 Dec 16;233(3):871–884. doi: 10.1007/s00221-014-4163-y

Figure 1. Experimental Setup.

Figure 1

(a) Subjects were seated and placed their hand in an initial position. Upon the green “go” signal, the subject reached for the ball. As depicted in b, Surface electromyography (EMG) was recorded from 7 muscles. In c, Four target ball sizes and representative scaled hand opening. (d) Example of reaching with mean peak aperture trace calculated from the finger and thumb marker data across multiple trials.