Autism and unfavorable left-right asymmetries of the brain

  • Daniel B. Hier
  • Marjorie LeMay
  • Peter B. Rosenberger
Article

Abstract

Utilizing computerized brain tomography, left-right morphologic asymmetries of the parietooccipital region were judged in 16 autistic patients, 44 mentally retarded patients, and 100 miscellaneous neurological patients. In 57% of the autistic patients the right parietooccipital region was wider than the left, while this pattern of cerebral asymmetry was found in only 23% of the mentally retarded patients and 25% of the neurological patients. It is suggested that unfavorable morphologic asymmetries of the brain near the posterior language zone may contribute to the difficulties autistic children experience in acquiring language.

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Copyright information

© Plenum Publishing Corporation 1979

Authors and Affiliations

  • Daniel B. Hier
    • 1
    • 2
  • Marjorie LeMay
    • 1
    • 2
  • Peter B. Rosenberger
    • 1
    • 2
  1. 1.Massachusetts General HospitalBoston
  2. 2.Harvard Medical SchoolUSA

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