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Life sciences/Physiology/Neurophysiology/Neurotransmission/Neural inhibition

She was 42 when she suffered a stroke, and in the aftermath she was like a prisoner in her own body: conscious and aware, able to hear and feel, but unable to move or communicate. After a decade, she was able to shake her head from side to side, but the prospects for further recovery were bleak. Today, however, thanks to an implant that links her brain to a computer, the neural signals that once guided routine movements have been able to control an on-screen keyboard and guide a robotic arm.