Casey Harrell, who has A.L.S., received surgically implanted electrodes last July that help connect his brain to a computer allowing him to speak with the assistance of an A.I.-powered computer voice.Credit…Ian C. Bates for The New York Times
In an experiment that surpassed expectations, implants in a patient’s brain were able to recognize words he tried to speak, and A.I. helped produce sounds that came close to matching his true voice.