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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 3.

Figure 3

Fitts’ law performance. (A-B): Empirical Fitts’ law regression models, relationship between completion time and index of difficulty for the two control systems. (A) For linear regression control, R2 was 0.97, 0.97, and 0.95 for 1-, 2-, and 3-DOF targets, respectively. (B) For parallel dual-site control, R2 was 0.94, 0.97, and 0.99 for 1-, 2-, and 3-DOF targets, respectively. (C-D): Fitts’ law performance metrics for the two control systems. Subjects exhibited higher values of throughput (C) and path efficiency (D) with linear regression control during 3-DOF targets, but lower values for 1-DOF targets. * p < 0.05