Scientists Have Reconnected Severed Nerves with Liquid Metal
To test the alloy, the engineers applied an electric pulse to nerves in a frog leg so that the calf muscle would contract. They then severed the sciatic nerve and connected the two ends with either the liquid metal alloy or Ringer's solution, a mix of electrolytes that mimic body fluids. Sure enough, the Ringer's solution only carried the charge so far, while the liquid metal alloy transmitted the electrical signals about as well as the nerve before it had been severed. This means it could be used to protect muscles and nerves after an injury, and since it's metal, it can be easily removed with the help of an x-ray.
his is obviously the early stages of what could be an exciting new treatment for nerve injuries. It's also, arguably, the first step towards truly wired creature. Of course, we're probably closer to building a cyborg than you might think. More here.