This ALS patient has a brain implant that translates his thoughts to computer commands
By Catherine Thorbecke, Amanda Sealy and Nadia Kounang, CNN (CNN) — You can watch Dr. Sanjay Gupta’s full report, plus his answers to your questions about this, on Erin Burnett OutFront tonight at 7pmET. Staring at a computer screen, Mark focuses deeply, his arms resting by his side. His right index finger trembles ever so slightly
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