Elon Musk's Neuralink has installed its second brain implant on a human patient, and the tech-mogul has also revealed he hopes to plant eight more chips by the end of the year. The company is to give people with quadriplegia – paralysis below the neck affecting both arms and legs – the "ability to control their computers and mobile devices" using their thoughts. And Elon Musk's brain chip company achieved that feat after 29-year-old Noland Arbaugh, who was left paralysed from the shoulders down by a diving accident eight years ago, played online chess and a video game in a breakthrough for Neuralink earlier this year.

And now, an unnamed second patient has had the chip succesfully implanted, according to Musk. Whilst speaking to MIT research scientist Lex Fridman on his podcast, he confirmed plans for more. "I don't want to jinx it but it seems to have gone extremely well with the second implant," the CEO shared.

"There's a lot of signal, a lot of electrodes. It's working very well." He didn't identify the person, but said they had a similar condition to Arbaugh.

In May, Neuralink revealed that wires had retracted from Arbaugh’s brain. reported that Musk's company considered taking the chip out all together but decided against it because it poses no risk to Arbaugh. Neuralink said the 29-year-old is using the chip for around eight hours a day during the week, and often as many as 10 hours a day on the weekends.

Arbaugh said the Link is like a “luxury overload,” and .