Bionic Limbs 'Learn' to Open a Beer
b'Andrew Rubin sits with a Surface tablet, watching a white skeletal hand open and close on its screen. Rubin\\u2019s right hand was amputated a year ago, but he follows these motions with a special device fitted to his upper arm. Electrodes on his arm connect to a box that records the patterns of nerve signals firing, allowing Rubin to train a prosthetic limb to act like a real hand. \\u201cWhen I think of closing a hand, it\\u2019s going to contract certain muscles in my forearm,\\u201d he says.
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