Study Finds Dyslexia Could Cause Visual Impairment As Well As Reading Impairment, Health News, ET HealthWorld
The readings were published in the ‘JNeurosci Journal‘.
He was the first to combine new methods to understand visual processing and brain activity in dyslexia, challenged a group of children aged six to 14 to identify the average direction of motion of a moving mass of dots, while their brain activity was measured.
It was found that children with dyslexia took longer to gather visual evidence and were less precise than their typically developing peers, and that the differences in behavior were reflected in the differences in brain activity.
Although reading ability is known to be affected by dyslexia, researchers still do not know which brain processes are affected by the condition. A better understanding of this could potentially lead to more effective support for those affected.
Dr Cathy Manning, Principal Investigator in the Autism Center to Reading University, said: âThese results show that the difficulties faced by dyslexic children are not limited to reading and writing. Instead, as a group, dyslexic children also show differences in the way they they process visual information and make decisions about it. “
“Future research will be needed to see if these differences in visual processing and decision making can be shaped to improve reading ability in affected children, or provide clues to the causes of dyslexia,” added Cathy.
Monitoring brain activity using EEG in the study showed that activity synchronized to the central parietal regions of the brain involved in decision making increased steadily in all children during the task until ‘they make a decision. However, this happened more gradually in dyslexic children.
The study supported a link between the treatment of movement and dyslexia, although the causes are not yet known.
Whether dyslexia is basically a visual processing disorder is hotly debated among researchers. With reading and writing being a major challenge in dyslexic children, a better understanding of its effects on the brain could help us improve existing interventions.