EditorialAustin Beggin, paralyzed from the shoulders down after a diving accident, tests equipment that allows him to send a thought signal through the cordical electrode array to the nerve cuff electrode in his arm to match what he saw on the screen, at Case Western Reserve University in Cleveland, Nov. 29, 2022. (Daniel Lozada/The New York Times)
EditorialIlias Belharouak, who runs the Oak Ridge Battery Manufacturing Center, with an electrode, in Knoxville, Tenn., Feb. 15, 2022. (Kendrick Brinson/The New York Times)
EditorialAlysson Muotri holds a multi-electrode array dish in his lab at the University of California, San Diego School of Medicine in La Jolla, Calif., Aug. 27, 2019. (Jenna Schoenefeld/The New York Times)