In part 2 of their coverage of dyslexia, NPR touches on the fact that to read, we use two main parts of our brain (there are three but they focus on two in this story). For most people, this happens almost automatically, however, for someone who is dyslexic, the brain must be trained. Evidence shows that intensive reading instruction greatly helps the dyslexic brain and acts almost as a rewiring of sorts.
I'm working on a piece that explores and explains more about the dyslexic brain; stay tuned!