Some boys with autism who are victims of a sudden regression in their interpersonal skills have larger brains than other children, including others with autism, according to the results of a study published Tuesday in the US.
Researchers at the MIND Institute at the University of California, Davis found that these children had 6% more brain volume than other children, according to a study published in the Proceedings of the National Academy of Sciences.
This abnormal brain growth begins at the age of four months and continues until 19 months, according to this study, conducted with 180 children, whose head was measured and IMR (magnetic resonance imaging) tests were performed.
Large brain size has been linked to autism in other studies, but the research carried out at MIND is the first to reveal that only autistic victims of regression of certain skills, such as language, are affected.
Research touted as “the largest ever conducted on brain development in preschool-aged children” found no abnormal brain growth in girls with autism.
Autism affects one child in 110 and four times as many boys as girls. Its causes are unknown and it appears in many ways, from simple shyness to an inability to communicate, passing through hypersensitivity to noise or light.
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