Neuralink Corp., the technology start-up aiming to link computers to human brains founded by billionaire Elon Musk, has raised $27 million from a dozen investors and plans to raise as much as $100 million, according to financial documents filed Friday. The San Francisco company is at the forefront of so-called neural lace technology, which implants electrodes into the brain with the goal of allowing people to upload and download thoughts and information. The financial disclosures about the fundraising were made to the Securities and Exchange Commission. However, in a series of tweets Friday, Musk denied that the company was seeking investment. "Neuralink is not raising money," Musk wrote in a reply to a tweet from Wall Street Journal reporter Rolfe Winkler.

Brain computer interfaces might prevent superintelligent AI from ending the world. Elon Musk is a busy guy. Given Musk's ambitiousness, it's not totally surprising that he is also launching a company that will look into ways to link human brains to computers. Musk reportedly plans to spend 3-5% of his work time on Neuralink, which will develop technology to integrate brains and computers as a way to fix medical problems and eventually supercharge human cognition. Existing brain-computer interfaces, which are relatively simple compared to Musks's goals, can connect to a few hundred brain cells at a time.