Has Neuralink made a breakthrough in brain implant technology?

Neuralink, the brain-computer interface company founded by Elon Musk, has revealed the identity of its first patient, who says the firm's implant has "changed his life". However, it is not yet clear that Neuralink has done anything beyond replicating existing research efforts, experts say. Musk announced in January that the first human patient had received a Neuralink implant, but little detail was released at the time. We now know – from a livestream video by the company – who that patient is and how the tests are going. Noland Arbaugh explains in the video that an accident eight years ago dislocated his fourth and fifth vertebrae, making him a quadriplegic.