![]() His movements didn’t rely on the damaged spinal cord inside his body. ![]() Every time he moved his fingers to play a note, he was playing a song of restored autonomy. What made this mundane bit of game play so extraordinary was the fact that the man had been paralyzed from the chest down for more than three years, without any use of his hands. He held the simplified guitar interface gingerly, using the fingers of his right hand to press down on the fret buttons and his left hand to hit the strum bar. In 2015, a group of neuroscientists and engineers assembled to watch a man play the video game Guitar Hero. ![]() ![]() Sensors on the arm register his intentions, while electrodes stimulate the nerves and muscles to produce his desired movements. Motion Restored: Luke Tynan, who was paralyzed in 2017 by a spinal cord injury, demonstrates the wearable system that enables him to control his arm and hand.
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