Experiment paradigm and analysis overview.

<p>(A) System overview of the real-time prosthetic hand control. MEG signals were acquired in real time to be analyzed on a single computer. The prosthetic hand was controlled according to the decoders that inferred the timing of movement intention and types of performed movements. The subject controlled the prosthetic hand by watching the screen representing the prosthetic hand and following the instructions for movements. (B) Experimental paradigm of the open-loop session. First, one of the movement types, grasping or opening, was presented on the screen in front of the subject. Then the subject moved the right hand as instructed at the execution cue. Each movement type was repeated four times. (C) Position of MEG sensors used for online control and offline analysis are shown as red points. (D) Position of vertices for estimation of eSCPs. Eighty-four vertices were selected in the sensorimotor cortex of each hemisphere: red, contralateral; blue, ipsilateral.