Cited by 197Autism Spectrum Disorder ResearchGenetics and Neurodevelopmental DisordersFunctional Brain Connectivity Studies

Structural and functional magnetic resonance imaging of autism spectrum disorders

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Stigler, Kimberly A., McDonald, Brenna C., Anand, Amit, Saykin, Andrew J., McDougle, Christopher J.·2011·Brain Research

Abstract

The neurobiology of autism spectrum disorders (ASDs) has become increasingly understood since the advent of magnetic resonance imaging (MRI). Initial observations of an above-average head circumference were supported by structural MRI studies that found evidence of increased total brain volume and early rapid brain overgrowth in affected individuals. Subsequent research revealed consistent abnormalities in cortical gray and white matter volume in ASDs. The structural integrity and orientation of white matter have been further elucidated via diffusion tensor imaging methods. The emergence of functional MRI techniques led to an enhanced understanding of the neural circuitry of ASDs, demonstrating areas of dysfunctional cortical activation and atypical cortical specialization. These studies have provided evidence of underconnectivity in distributed cortical networks integral to the core impairments associated with ASDs. Abnormalities in the default-mode network during the resting state have also been identified. Overall, structural and functional MRI research has generated important insights into the neurobiology of ASDs. Additional research is needed to further delineate the underlying brain basis of this constellation of disorders.

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Crossref · 10.1016/j.brainres.2010.11.076

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  1. Fombonne E Is a large head circumference a sign of autism? J. Autism Dev. Disord 2000 30 365 11039865

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Authors
Stigler, K. A., McDonald, B. C., Anand, A., Saykin, A. J., & McDougle, C. J.
Affiliations
  • Riley Hospital for Children (US)
  • Indiana University School of Medicine (US)
Corresponding author
Stigler, Kimberly A.
Venue
Brain Research
Publisher
Elsevier BV
Published
2011-03
Volume
1380
Pages
146-161
ISSN
0006-8993 (ISSN-L)
OpenAlex
W2025895794
Cited by
197
References
210
Citations by year
2026: 3 · 2025: 8 · 2024: 7 · 2023: 6 · 2022: 13 · 2021: 11 · 2020: 8 · 2019: 10 · 2018: 13 · 2017: 17 · 2016: 14 · 2015: 19 · 2014: 20 · 2013: 17 · 2012: 23
FWCI
1.12
Type
journal article
Language
en
Open access
Locations
  • Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • IUScholarWorks (Indiana University) (submittedVersion)
Funders
  • National Institute of Mental Health (RO1 MH072964)
  • Daniel X. and Mary Freedman Foundation (MH082119)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
Keywords
autism spectrum disorder, neurobiology of autism, brain overgrowth, gray matter volume, white matter integrity, diffusion tensor imaging, cortical activation, cortical specialization, neural circuits, default mode network, resting-state functional connectivity
MeSH terms
Brain, Child, Child Development Disorders, Pervasive, Child, Preschool, Humans, Infant, Magnetic Resonance Imaging, Models, Neurological

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