The brain scans might allow dyslexia detection in the children of pre-school even before these kids start reading, according to researchers.One US team got to know that such signs in scans have been seen already in the adults with this condition.
And the brain differences can be one cause instead of being consequence of the condition, dyslexia, something which wasn’t known until now.The Scans can allow intervention and diagnosis early, the experts hope.
Part of brain which is affected is named arcuate fasciculus.In the forty children entering school which they studied, it was found that some had the shrinkage of that region of brain that processes language and word sounds.
They also asked same children that they do varied types of the pre-reading trials, like trying out some different sounds that were in words.The children having smaller region arcuate fasciculus got low scores.
It’s early to tell if structural differences in brain appearing in this study are marker of this condition, dyslexia. Researchers plan on following up the children groups while they move on at school, for determining this.
Prof John Gabrieli, the lead researcher said,
“We don’t know yet how it plays out over time, and that’s the big question. We do not know how many of these children will go on to develop problems. But anyway, we want to intervene before that, and the younger you do that the better. We already know that reading programmes and interventions can really help.”
Volume of left arcuate tends to have one particularly strong association with the poorer test results of pre-reading, in this study.
Left side of arcuate fasciculus also connects one area of brain that’s involved in the speech production along with one other used for understand spoken and written language.One organised and larger arcuate fasciculus can aid in the communication between these 2 regions, according to researchers.
Also, Prof Gabrieli added, “This brain area fits with a lot of what we already know. So it’s a good candidate.”
Some years back, the doctors of US described case of one child who had developed this condition after the radiation treatment intended for one brain tumour. This same region of brain – arcuate fasciculus – happened to be involved.
One spokeswoman for Association British Dyslexia told that brain imaging seemed to be providing growing evidence of significant differences between brains of the people who have dyslexia sand those that don’t.
“It is particularly exciting to envisage a future where this technology could be part of a cluster of indicators that would identify a risk of dyslexic difficulties.”
Though, she said that much more research was required to determine whether in future it could be possible diagnosing dyslexia with brain scan.