Tech moguls like Elon Musk, Jeff Bezos, and Bill Gates are investing in brain-implant startups.
Through their venture-capital funds, Jeff Bezos and Bill Gates both recently backed the Brooklyn, New York, startup Synchron, which has tested its brain stent in seven humans.
Peter Thiel, a billionaire cofounder of PayPal, invested last year in Utah's Blackrock Neurotech, an older BCI startup that has said it hopes to apply for Food and Drug Administration approval soon.
That long-term potential has caught the attention of tech billionaires like Musk, Gates, and Bezos.
No BCI startup has gone public, and most of their fundraising rounds have been modest compared with larger and more-mature biotechs.