Elon Musk says Neuralink has successfully implanted a brain chip in a second human patient. The patient has used the chip to play video games and design 3D objects. Here's how Neuralink's chips work.

Neuralink's brain chip has been implanted into a second patient as part of early human trials.

Elon Musk’s brain implant startup Neuralink announced this week that “Alex,” the second person to receive the company’s brain-computer interface, is recovering healthily.

Elon Musk's brain technology startup Neuralink said its implant, designed to allow paralyzed patients to use digital devices by thinking alone, is working well in a second trial patient.

Elon Musk ’s Neuralink has implanted a second trial patient with its brain chip, a device designed to give paralysed people the ability to control devices through thought alone.

A third person received a brain implant from Neuralink. Elon Musk said during an interview that Neuralink wants to implant the experimental devices in more people this year. Two other patients ...

[Related: 85% of Neuralink implant wires are already detached, says patient.] “Imagine if Stephen Hawking could communicate faster than a speed typist or auctioneer.

Neuralink has published an update on the second patient in its early human trials, and it said that "promisingly," it has "observed no thread retraction" in the participant.

Musk said 400 of the implant’s electrodes on the second patient’s brain are working. Neuralink on its website states that its implant uses 1,024 electrodes.