To the Editor.—
We wish to congratulate JAMA and the Council on Scientific Affairs1 for the excellent article on dyslexia. It brings out the point that dyslexia is a problem due to the structural characteristics of the brain and as such is a responsibility not only of the educator but of the physician as well. We wish to add some additional information that may be helpful to physicians encountering dyslexic individuals.There is now strong evidence that the disabilities of persons with dyslexia stem from anomalies (or characteristics) of brain development. Positron emission tomography scan (M. Reichle, MD, et al, oral communication, March 1989) and computerized electroencephalogram studies2 reveal differences in brain function. Galaburda et al3,4 have now studied the brains of nine persons with dyslexia. In every one, they have found numerous heterotopias in the cortex, especially in the perisylvian areas. Similar changes have not been
Masland RL, Duane DD. Dyslexia. JAMA. 1989;262(23):3270. doi:10.1001/jama.1989.03430230042016
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