Yeah, the resiliency of the organic body is impressive. I would hazard a guess that similar therapy for stroke rehabilitation could be even more effective if one were able to actuate the hand like researchers in the OP have done with the legs. So far I've only seen therapy that is essentially VR equivalent of mirror box therapy https://www.researchgate.net/publication/278157406_Reinforce... I think I'm going to put an OpenEEG setup together...