Yale researchers have shown that when people with dyslexia try to read, a front part of the brain is over-stimulated while crucial portions in the center and back are under-stimulated. The diagrams show stimulated areas of the brain during reading.
Source: Drs. Sally Shaywitz and Bennet Shaywitz
New York Times
For more information on helping dyslexic students cope with and overcome the reading difficulties their condition presents, download Reading Horizons Free E-Book: Learning Disabilities 101.