Every once in a while, you find these patients who make amazing recoveries from severe brain damage when so many don't. Just as some people have natural immunity to certain diseases, or a greater susceptibility to others, I wonder if these people have some unique genes that enable some brain regeneration or brain remapping that wouldn't normally occur in someone else. I have no idea how you would study this, but it would be worthwhile to find out what causes this recovery and whether it can be applied to others.
I remember hearing that the brain can adapt and compensate for damaged portions.