The Smart Hand
See if this rings any science fiction bells for you . . .
A young man loses one of his hands. Through the miracle of technology, he is given an artificial hand that is connected via nerves to his brain. In other words, the artificial hand communicates with his brain, and vice versa.
A scene out of Star Wars, right? Or maybe Wormtail out of Harry Potter and the Goblet of Fire? No, it’s real: