Dyslexia affects more than reading ability. According to research released by JNeurosci Dyslexic children absorb visual information at a slower rate than their peers who are normally developing.
Some researchers believe that dyslexia is a visual processing disorder at its core because a brain pathway that is involved in processing motion is also altered in dyslexia. There is a debate over whether impaired motion processing causes dyslexia. Some have argued that we could be in a position to improve dyslexic reading skills by improving our visual processing.
In a recent study by Manning and co., children from ages six to 14 viewed the movement of a large number of dots and identified their typical direction of motion while the researchers recorded their brain activity using EEG. Mathematical models of their reaction time and accuracy revealed that dyslexic children had more difficulty obtaining visual evidence than their generally developing peers. These behavioral differences were caused by brain activity variations. The child made a decision by synchronizing the activity in the areas of the cortex, which are involved in making decisions, increased steadily. This ramping up of brain activity occurred more slowly in children with dyslexia. These results indicate dyslexia-related changes in motion processing and decision-making. The reason for this is not known.
Manning, C., and the others. (2021). Visual motion and decision-making in dyslexia: Reductions in sensory evidence and associated neural dynamics. JNeurosci. doi.org/10.1523/JNEUROSCI.1232-21.2021.
Content Source: https://www.news-medical.net/news/20211115/Dyslexic-children-pick-up-visual-information-slower-than-their-typically-developing-peers.aspx