Neuroscientist: First-Ever Human Head Transplant Is Now Possible 522
dryriver writes "Technical barriers to grafting one person's head onto another person's body can now be overcome, says Dr. Sergio Canavero, a member of the Turin Advanced Neuromodulation Group. In a recent paper, Canavero outlines a procedure modeled on successful head transplants which have been carried out in animals since 1970. The one problem with these transplants was that scientists were unable to connect the animals' spinal cords to their donor bodies, leaving them paralyzed below the point of transplant. But, says Canavero, recent advances in re-connecting spinal cords that are surgically severed mean that it should be technically feasible to do it in humans. (This is not the same as restoring nervous system function to quadriplegics or other victims of traumatic spinal cord injury.)"
Body transplant (Score:5, Informative)
They are really putting a "new" body on the old head. Therefore this is a body transplant.
Body transplant (Score:5, Informative)
I'd really argue that because who you are is really all in the head, this is a body transplant rather than a head transplant.
TFA says that the idea is still rather speculative, but if it were to work I have to wonder how long it would take the brain in the head that was connected to a new body to figure out how to make the new body work. I doubt all the individual axons would connect perfectly in 1:1 fashion in the same way as it were on the old body. In fact I'd be surprised if any axons connected to the same corresponding one in the new body.
As an aside as a teenager I suffered a very serious injury to my wrist when my right hand went through a pane on a glass door. The glass basically sliced my wrist open to the bone. Aside from losing a lot of blood from the severed arteries, the radial nerve was completely severed and was microsurgically reconnected that night. The radial nerve basically gives your hand sensation from the thumb to the middle finger, and when the nerves first grew back, the sensations would come out in the wrong place - if I touched the inside of my middle finger the sensation would come out elsewhere on the hand. However after a few months things got "remapped" and the sensations all now come out in the correct places. I'd imagine this would be a more serious problem if a nerve that conducts some sensation is now connected to one that's supposed to activate a muscle.
Re:head transplant, or body transplant? (Score:5, Informative)