Being able to control a computer with your mind remains in the realm of science fiction. But Facebook is working on an approach that would do it without drilling holes into your brain. On Tuesday, the company provided an update on its plans to create a “brain computer interface,” which it teased back in 2017. Although the technology could take a decade to develop, Facebook is finding some promise in using infrared light to measure brain activity and thoughts into computer commands. “Like other cells in your body, (brain) neurons consume oxygen when they’re active. So if we can detect shifts in oxygen levels within the brain, we can indirectly measure brain activity,” the company wrote in a blog post. To detect those shifts, Facebook is taking a page from pulse oximeters, the medical device you place on your index finger to gauge the oxygen levels in your blood. The device can do this by emitting and comparing how much near-infrared light is absorbed by the blood. “We can also use near-infrared light to measure blood oxygenation in the brain from outside of the body in a safe, non-invasive way,” the company said. Facebook has even created a prototype, which… Read full this story
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