Elon Musk says a third patient got a Neuralink brain implant. The work is part of a booming field

Elon Musk's Neuralink has successfully implanted brain-computer interface devices in three people and aims to implant the devices in 20 to 30 more individuals this year. The technology is showing promising results, with patients using it to play video games and create 3-D objects. Other companies are also actively working on similar technology to benefit people with brain injuries.