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Message: <blockquote data-quote="Shadow.Walker" data-source="post: 14386753" data-attributes="member: 456557">Claudia Mitchell - first woman to have a bionic arm - a  prosthetic limb  that she controls with her mind. Claudia Mitchell, who  lost her arm in a  motorcycle crash in 2004, volunteered to be fitted  with the limb in  2006 after becoming frustrated with a standard  prosthetic. Surgeons took  nerves from her shoulder and embedded them  under muscle in her chest. <img src="http://static.ddmcdn.com/gif/bionic-arm-2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /> <a href="https://plus.google.com/photos/106223965383290201748/albums/5839854359146253953/5839854360810055538?authkey=CMjcvdTjt_fX9AE" target="_blank"><img src="https://lh6.googleusercontent.com/-hsgtXqgLi-Y/UQtUmawZZ3I/AAAAAAADgPI/HT9aLRGTc-A/w497-h373/314864_338148726297316_1215499827_n.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></a> [YOUTUBE]X1OBzc9QfIs[/YOUTUBE] The "bionic arm" technology is possible primarily because of two facts of amputation. First, the motor cortex in the brain<a href="http://health.howstuffworks.com/brain.htm" target="_blank">http://health.howstuffworks.com/brain.htm</a> (the area that controls voluntary muscle movements) is still sending out control signals even if certain voluntary muscles  are no longer available for control; and second, when doctors amputate a  limb, they don't remove all of the nerves that once carried signals to  that limb. So if a person's arm is gone, there are working nerve stubs  that end in the shoulder and simply have nowhere to send their  information. If those nerve endings can be redirected to a working  muscle group, then when a person thinks "grab handle with hand," and the  brain sends out the corresponding signals to the nerves that should  communicate with the hand, those signals end up at the working muscle  group instead of at the dead end of the shoulder. (read more from science.howstuffworks) </blockquote>

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