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. 2015 Jun 12;12:52. doi: 10.1186/s12984-015-0045-1

Fig. 1.

Fig. 1

Setup. During the execution of the figure-eight writing task, subjects were seated at a height-adjustable desk. The apparatus included a motion tracking system (upper limb kinematics), an electromyography device (surface EMG of eight upper limb muscles), and a tablet (2D coordinates of the pen tip)