Last month, DARPA announced the latest breakthrough in brain-controlled artificial limbs: a robotic arm that a user can actually feel. It works via neural implants that connect to a computer through an interface top of the user’s skull, and sends signals from there to the arm telling it how to move.
This probably isn’t the first time you’ve heard of such a thing. Over the past several years, teams around the world have devised brain-machine interfaces that make the seemingly impossible a reality. Back in 2012, the program that funded this breakthrough, Revolutionizing Prosthetics, made news when a quadriplegic with neural implants manipulated a robotic arm just by thinking about it, and an amputee felt the relative resilience of various objects with the help of electrical stimulation of his peripheral nerves. Last year, a paraplegic kicked off the FIFA World Cup in Sao Paulo with the help of an exoskeleton controlled by a computer reading signals from an electrode-studded cap. Even DIYers are getting in on the brain-controlled robot action through the open-source brain-computer interface (OpenBCI) project, which launched last year via a Kickstarter campaign.
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