When a child struggles to read, it is often linked to how the brain processes language. Researchers looked at brain activity in over 1,500 children to see if there are common patterns in those with dyslexia. They compared children with dyslexia to those without the condition across three different writing systems: Chinese, English, and German.
The study found that regardless of the language, children with dyslexia showed lower activity in two specific areas: the left fusiform gyrus and the inferior parietal lobule. These are parts of the brain involved in processing information. However, the study also found some differences based on the specific language. For example, children using Chinese showed less activity in the left inferior frontal gyrus, while those using English showed less in the left inferior temporal gyrus.
Age also played a role in how these patterns appeared. In languages with deep symbols, older children showed more consistent patterns in the inferior temporal gyrus. In alphabetic languages like English and German, younger children showed more consistent patterns in the superior temporal gyrus. These findings help map out how the brain handles reading across different cultures.
