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. Author manuscript; available in PMC: 2015 Dec 1.
Published in final edited form as: J Neural Eng. 2014 Nov 14;11(6):066013. doi: 10.1088/1741-2560/11/6/066013

Fig. 9. Averaged use of sequential vs simultaneous control during a Fitts' Law trial, experimental block 6.

Fig. 9

For 1-DOF targets, subjects mostly activated one DOF but occasionally activated two DOFs. For 2-DOF targets, subjects often began the trial using only one DOF and gradually added simultaneous activation of a second DOF. Towards the end of the trial, subjects were again more likely to use only one DOF at a time. For 3-DOF targets, as for 2- DOF targets, subjects were more likely to use simultaneous control during the middle of trial and were more likely to use one DOF at a time at the beginning and the end. Horizontal axis represents normalized trial duration, partitioned into deciles. Vertical axis represents the distribution of 1-DOF and simultaneous 2- and 3-DOF activity during a given decile for targets of different complexities. Data were averaged across all subjects. Shaded regions represent mean ± SEM.