Jonathan Kuniholm's right arm terminates in a carbon-fiber sleeve trailing cables connected to a PC. He has no right hand, unless you count the virtual one on a display in front of him. The CG hand, programmed to look like silvery stainless steel, moves through a sequence of motions: spherical grasp, cylindrical grasp, thumb to forefinger -- all in response to signals from Kuniholm's muscles picked up by electrodes in the sleeve.
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© Johns Hopkins University Applied Physics Laboratory
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The device pictured above is the second prototype in the U.S. military's ambitious prosthetics project to build a bionic arm.
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