June 25, 2009
Brain scans support dyslexia subtypes
Scottish medical scientists say they have discovered specific structural differences in the brains of people with distinct subtypes of dyslexia.
The University of Edinburgh researchers say their findings are among the first to directly link brain structure with dyslexia subtype and symptom severity.
The scientists said it's increasingly accepted that dyslexia might not be a single disorder, but a group of related neurological pathologies.
These results provide evidence for the existence of various subtypes of dyslexia characterized by different brain phenotypes, Pernet said.
In addition, behavioral analyses suggest that these brain phenotypes relate to different deficits of automatization of language-based processes "¦
The study appears in the journal BMC Neuroscience.