For the first time, scientists have found that brain differences in the visual brain systems of infants who later are diagnosed with autism are associated with inherited genetic factors.

Published in the American Journal of Psychiatry, this research shows that brain changes in the size, white matter integrity and functional connectivity of the visual processing systems of six-month olds are evident well before they show symptoms of autism as toddlers. Moreover, the presence of brain changes in the visual system is associated with the severity of autism traits in their older siblings.

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