What's Happening With Phantom Limbs?

A classic way to treat them is with what's called a mirror box. If you look at it the right way, you can actually see a reflection of your right arm but it looks like its left arm. In an even more modern versions of this, people use virtual reality. And by working with that phantom limb, somehow that causes the brain to rewire again. That secondary level updates itself and realizes, guess what? I don't have a left arm anymore.