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. Author manuscript; available in PMC: 2017 Apr 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2015 Aug 20;63(4):737–746. doi: 10.1109/TBME.2015.2469741

Figure 1.

Figure 1

Fitts’ law task [8, 28]. (A) Subjects were instructed to move a ring cursor into annulus-shaped targets. (B) Subjects used the system’s three DOFs (rotation, wrist flexion/extension, and hand open/close) to translate the cursor and make the radius of the cursor grow or shrink.