25
September 2003
Dyslexia: In a word
Have neuroscientists finally identified the defect causing dyslexia? Many theories have been proposed, but recent brain imaging studies have supplied fresh evidence that the fundamental problem lies with the brain's ability to process phonemes — the speech sounds that enable us to tell one word from another. According to the phonological model, dyslexics struggle to extract meaning from text because of an underlying difficulty in deconstructing written words into phonemes. But progress in understanding the condition has yet to lead to improved treatment strategies.
Dyslexia: Lost for words
GLENN MURPHY
Thanks in part to brain-imaging technology, researchers are now homing
in on the root cause of dyslexia. But research into strategies for treating
the condition is still in its infancy, says Glenn Murphy.
Nature 425, 340–342 (2003); doi:10.1038/425340a
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