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I'm an engineer who is looking to build a robotic hand for people without their upper forearm(from center of forearm in direction of hand), controlled by the Thalmic Myo(an EMG sensor). I am first checking for the idea's viability.

I was wondering if one who does not have their upper forearm can still send the correct nerve impulses for a desired hand movement through their Median and Ulnar nerves?

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Yes, severed nerves still convey neural responses from the brain.

In fact, nerve potential recordings in the ulnar and median nerves of the stumps of arm amputees have already been successfully applied to control arm prosthetics (Jia et al. 2007; Kuiken et al., 2007.

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    $\begingroup$ I will work on formatting the refs later. I am mobile. Kuiken et al.: ncbi.nlm.nih.gov/pubmed/17276777. Jia et.al: ncbi.nlm.nih.gov/pubmed/17482005 $\endgroup$ – AliceD Jan 27 '15 at 5:29
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    $\begingroup$ Will such patients have phantom arm syndrome? @ChrisStronks? $\endgroup$ – One Face Jan 27 '15 at 12:01
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    $\begingroup$ @CRags - likely. Many amputees have phantom sensations, but I am not an expert on that. I am only familiar with Ramachandran's work and that suggests it is very common in upper arm amputees. The severity differs. $\endgroup$ – AliceD Jan 27 '15 at 12:04
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    $\begingroup$ I am asking particularly about people with prosthesis as they need ulnar, radial and median nerves in functional order. If you find anything incidentally anytime please add it with a comment to me! Thanks! $\endgroup$ – One Face Jan 27 '15 at 12:31
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    $\begingroup$ @CRags - For now I can say that active use of (conventional) prosthetics reduces phantom pain. I will update if I find out more. $\endgroup$ – AliceD Jan 27 '15 at 12:42

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