He should contact Dr. Peter Tass from Stanford (a brilliant medical doctor, who has studied physics and math too) who has/is developing and running trials using vibrating gloves (random vibrations to the finger tips that are relayed to the brain and thus re-training the neurons to fire at random rather than in a systematic way). Those who were literally bed ridden for a few years and on medication-20 plus pills per day are now almost normal, hardly taking drugs and one guy has even run a half - marathon, while another is swinging like an acrobat in the gym, jumping around and swinging on bars. People are now building their own gloves using the open source code provided and a few of them are seeing real progress.
Just go to google or You Tube and search for Peter Tass.