New Technology Allows Amputee to Control Artificial Leg Using Brainwaves

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Zac Vawter’s right leg weighs about 10 pounds, slightly less than his left. But it works normally; he doesn’t have to do much more than think to rotate his ankle, walk or climb stairs.

Rather than tissue and bone, the 32-year-old amputee’s right leg is a prosthesis made of aluminum, two motors, sensors and a powerful computer system.

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