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. Author manuscript; available in PMC: 2019 Nov 1.
Published in final edited form as: IEEE Trans Biomed Eng. 2018 Oct 1;65(11):2417–2427. doi: 10.1109/TBME.2018.2872855

Fig. 1.

Fig. 1.

A) Overall experimental strategy for control via OSA and MI. Subjects overtly attend to either the left or right side according to the task cue, directing the cursor’s movement to either the left or right; subjects imagine the repeated movement of their left or right hand, according to the task cue, directing the movement of the cursor to the left or right during MI modulation. B) Overall study design. Each participant was randomly assigned to one of two groups and completed three screening sessions. In group one, OSA was performed first, followed by MI; while group two performed the reverse. A subset of the subjects whose performance was higher than the pre-determined threshold was invited to complete three sessions of 3D 8 target tasks with further subsection of those subjects participating in two additional sessions of 3D 12 target tasks.