New research on dyslexia
This morning I read an interesting article about some new research on dyslexia. There were a couple of key passages that resonated with me:
Some hypothesize that in people with dyslexia, the way that speech sounds are represented in the brain is impaired, while others contend that the brains of people with dyslexia represent the sounds correctly, but have trouble accessing them because of faulty brain connections.
In the new study, Bart Boets, a clinical psychologist at KU Leuven, in Belgium, and his colleagues used brain imaging to test which hypothesis — flawed sound representations or flawed wiring — best explains dyslexia.
The participants with dyslexia had notably worse connectivity between Broca’s area, a region in the brain’s frontal lobe linked to speech production, and the left and right auditory cortexes, the researchers reported online today in the journal Science. In addition, the people with the weakest connections performed the worst on reading and spelling tests. The findings suggest dyslexia stems from a failure to connect to fundamental sound representations, rather than problems with those representations themselves, the researchers said.
I found it particularly compelling because it reinforced what we’ve been learning about the brain as we put our boys through their individualized programs at Brain Balance. If you missed my post on their services and why they’re relevant for our family, you can read it here.