A cluster of researchers surround 45-year-old Keith Thomas, their eyes fixed on his right hand. “Open, open, open,” they urge, cheering when his fingers flutter out to mirror an image on a computer screen and again when they begin to curl back inward. [time-brightcove not-tgx=”true”] Thomas, who was paralyzed from the chest down after a diving accident in July 2020, is able to move his hand again thanks to a cutting-edge clinical trial led by researchers from Northwell Health’s Feinstein Institutes for Medical Research in New York.