ABSTRACT

The latest research into the causes of dyslexia is saying that the dyslexic brain processes written words differently. Dyslexic readers aren't using these high-powered areas and instead compensate by using the less effective Brocas area. Dyslexic readers have been found to have strong activity in the right side of their brain. Current research has found 10 possible genetic factors that may contribute to dyslexia, according to the Dyslexia Research Trust in Oxford. Four of the genes affect brain development. Genetic researchers are arguing that the causes of dyslexia are to be found in the early stages of brain development in the foetus in the womb. In dyslexics, the development of the visual magnocellular system is impaired, which causes letters to appear to move around and cross over each other. A small minority of people acquire dyslexia after they are born. The most common causes of acquired dyslexia are brain trauma or brain injury.