FAP, June 6 / PRNewswire-FirstCall-Asianet /-- although Neural Link, a brain-computer interface company that Musk co-founded, has not been publicly listed, its valuation has more than doubled in the past two years to about $5 billion. Neural connection has not started financing recently, and its latest valuation is based on the transaction price of the shares transferred by the original shareholders, Reuters reported on the 5th. Neural Connectivity was valued at nearly $2 billion about two years ago. Neural Connectivity announced on May 25 that it had been approved by the US Food and Drug Administration to conduct human trials.