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  • Title: High motion coherence thresholds in children with autism.
    Author: Milne E, Swettenham J, Hansen P, Campbell R, Jeffries H, Plaisted K.
    Journal: J Child Psychol Psychiatry; 2002 Feb; 43(2):255-63. PubMed ID: 11902604.
    Abstract:
    BACKGROUND: We assessed motion processing in a group of high functioning children with autism and a group of typically developing children, using a coherent motion detection task. METHOD: Twenty-five children with autism (mean age 11 years, 8 months) and 22 typically developing children matched for non-verbal mental ability and chronological age were required to detect the direction of moving dots in a random dot kinematogram. RESULTS: The group of children with autism showed significantly higher motion coherence thresholds than the typically developing children (i.e., they showed an impaired ability to detect coherent motion). CONCLUSIONS: This finding suggests that some individuals with autism may show impairments in low-level visual processing--specifically in the magnocellular visual pathway. The findings are discussed in terms of implications for higher-level cognitive theories of autism, and the suggestion is made that more work needs to be carried out to further investigate low-level visual processing in autism.
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