Cited by 578Autism Spectrum Disorder ResearchFunctional Brain Connectivity StudiesGenetics and Neurodevelopmental Disorders

Autism as a neural systems disorder: A theory of frontal-posterior underconnectivity

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Just, Marcel Adam, Keller, Timothy A., Malave, Vicente L., Kana, Rajesh K., Varma, Sashank·2012·Neuroscience & Biobehavioral Reviews

Abstract

The underconnectivity theory of autism attributes the disorder to lower anatomical and functional systems connectivity between frontal and more posterior cortical processing. Here we review evidence for the theory and present a computational model of an executive functioning task (Tower of London) implementing the assumptions of underconnectivity. We make two modifications to a previous computational account of performance and brain activity in typical individuals in the Tower of London task (Newman et al., 2003): (1) the communication bandwidth between frontal and parietal areas was decreased and (2) the posterior centers were endowed with more executive capability (i.e., more autonomy, an adaptation is proposed to arise in response to the lowered frontal-posterior bandwidth). The autism model succeeds in matching the lower frontal-posterior functional connectivity (lower synchronization of activation) seen in fMRI data, as well as providing insight into behavioral response time results. The theory provides a unified account of how a neural dysfunction can produce a neural systems disorder and a psychological disorder with the widespread and diverse symptoms of autism.

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Crossref · 10.1016/j.neubiorev.2012.02.007

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  • Lower processing speed is consistent with biological accounts of the autistic brain indicating reduced long-range connectivity, particularly between frontal and posterior cortex.

    “Lower processing speed is also consistent with biological accounts of the autistic brain, which indicates reduced long-range connectivity in the brain (in particular, between frontal and posterior regions of cortex; Just et al., 2012).”

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  1. Just MA Carpenter PA Varma S Computational modeling of high-level cognition and brain function Human Brain Mapping 1999 8 128 136 10524604 PMC6873299

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Authors
Just, M. A., Keller, T. A., Malave, V. L., Kana, R. K., & Varma, S.
Affiliations
  • Carnegie Mellon University (US)
  • University of Alabama at Birmingham (US)
  • University of Minnesota (US)
Corresponding author
Just, Marcel Adam
Venue
Neuroscience & Biobehavioral Reviews
Publisher
Elsevier BV
Published
2012-04
Volume
36
Issue
4
Pages
1292-1313
ISSN
0149-7634 (ISSN-L)
OpenAlex
W2099388920
Cited by
578
References
160
Citations by year
2026: 28 · 2025: 34 · 2024: 31 · 2023: 32 · 2022: 39 · 2021: 37 · 2020: 39 · 2019: 37 · 2018: 32 · 2017: 50 · 2016: 44 · 2015: 75 · 2014: 58 · 2013: 32 · 2012: 10
FWCI
4.43
Type
journal article
Language
en
Open access
Locations
  • Neuroscience & Biobehavioral Reviews (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • KiltHub Repository (submittedVersion)
  • Figshare (submittedVersion, cc-by)
  • KiltHub Repository
Funders
  • Office of Naval Research (N00014)
  • National Institute of Child Health and Human Development (HD055748)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (P50HD055748, HD 055748)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetics and Neurodevelopmental Disorders
Keywords
autism spectrum disorder, executive function, Tower of London task, computational model, parietal cortex, reaction time (psychology), functional connectivity
MeSH terms
Autistic Disorder, Behavior, Brain, Cerebrovascular Circulation, Cognition, Computer Simulation, Frontal Lobe, Humans, Magnetic Resonance Imaging, Mental Processes, Models, Neurological, Neural Pathways, Neuropsychological Tests, Parietal Lobe, Perception, Social Behavior, Neuroimaging

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