major, I had a professor that said the science owed a lot to motorcycle head injuries. They were able to look at the area of the brain that was injured and figure out its function.
One thing they found was that often another part of the brain could take over some of the functions that were lost.
This was back in the 90s.

"One thing they found was that often another part of the brain could take over some of the functions that were lost."

Consciousness uses the brain as a tool and make-shift tool for its own sake.
The brain does not create consciousness, but can certainly inhibit the expression of consciousness.

was the same. What worked in one brain injury didn’t work in all cases.

Guy was as ordinary as you can get, factory job. After the injury, he tested genius level in an area he claimed to have been a dunce in through school. Another one started to speak perfect Polish. One set of grandparents was Polish, but they'd always spoken nothing but English around their kids and grandkids. It happens and one theory is that the injured brain somehow gets out of its own way, allowing the uninjured parts to overcompensate.

It's rare, though, and certainly nothing anyone can count on.