1. Prosthetic limbs

2. This latest iteration is a bionic hand, with each finger driven by its own motor. Inside of the molded forearm are two electrodes that respond to muscular signals in the residual limb: Sending a signal to one electrode opens the hand and to the other closes it
3. http://www.smithsonianmag.com/innovation/the-insane-and-exciting-future-of-the-bionic-body-918868/?no-is

4. The guy has had a prosthetic since has was 3 months old and he's trying to improve prosthetic limbs.

Read more: http://www.smithsonianmag.com/innovation/the-insane-and-exciting-future-of-the-bionic-body-918868/#ZBU1i2kKqWwksQ1d.99
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