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Neuroimaging in autism

S Deb1, B Thompson

  • 1Department of Psychological Medicine, University of Wales College of Medicine, Cardiff. deb@cardiff.ac.uk

The British Journal of Psychiatry : the Journal of Mental Science
|February 2, 1999
PubMed
Summary
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Neuroimaging studies reveal brain volume increases and structural/functional abnormalities in autism, particularly in the frontal lobe and anterior cingulate gyrus. Further research is needed to understand this complex developmental disorder.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Radiology

Background:

  • Autism is a developmental disorder characterized by cognitive deficits.
  • Neuroimaging is a key tool for studying autism spectrum disorder (ASD).

Purpose of the Study:

  • To review and discuss recent neuroimaging literature on autism.
  • To contextualize findings within broader neurobiological research.

Main Methods:

  • Systematic literature review of structural and functional neuroimaging studies in autism.
  • Discussion of findings in relation to other neurobiological research.

Main Results:

  • No single focal brain defect has been consistently identified in autism.
  • Observed abnormalities include increased brain volume, frontal lobe and corpus callosum structural differences.

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  • Functional neuroimaging indicates altered brain metabolism, blood flow, and anterior cingulate gyrus activity.

    • Conclusions:

    • Methodological challenges have limited autism research.
    • Future hypothesis-driven functional neuroimaging studies are crucial for understanding autism.
    • Investigating neurotransmitter and neuroreceptor activities will aid in unraveling autism's complexities.