Myth: Brain damage is always permanent.
Fact: The brain can repair or compensate for certain losses, and even generate new cells.
People once believed that we were born with a finite number of brain cells, and that was it for life; if you damaged any of them you could never get them back. Similarly, many scientists believed that the brain was unalterable; once it was" broken" it could not be fixed.
Now, of course, we know that the brain remains plastic throughout life, and can rewire itself in response to learning. It can also generate new brain cells under the right circumstances.