Tiny Magnets Implanted in Muscles Are Giving Prosthetic Hands a Remarkable New Ability

Tiny magnets implanted in muscles are helping a prosthetic hand feel like it is opening and closing naturally. You can close your eyes, make a fist, or reach for an object without ever needing to look at your hand. That seemingly effortless ability depends on a hidden sense called kinesthesia, which tells the brain how [...]