The anterior insula in autism: Under-connected and under-examined

Lucina Q. Uddin, Vinod Menon

Research output: Contribution to journalReview article

252 Scopus citations

Abstract

Autism is a complex neurodevelopmental disorder of unknown etiology. While the past decade has witnessed a proliferation of neuroimaging studies of autism, theoretical approaches for understanding systems-level brain abnormalities remain poorly developed. We propose a novel anterior insula-based systems-level model for investigating the neural basis of autism, synthesizing recent advances in brain network functional connectivity with converging evidence from neuroimaging studies in autism. The anterior insula is involved in interoceptive, affective and empathic processes, and emerging evidence suggests it is part of a "salience network" integrating external sensory stimuli with internal states. Network analysis indicates that the anterior insula is uniquely positioned as a hub mediating interactions between large-scale networks involved in externally and internally oriented cognitive processing. A recent meta-analysis identifies the anterior insula as a consistent locus of hypoactivity in autism. We suggest that dysfunctional anterior insula connectivity plays an important role in autism. Critical examination of these abnormalities from a systems neuroscience perspective should be a priority for further research on the neurobiology of autism.

Original languageEnglish (US)
Pages (from-to)1198-1203
Number of pages6
JournalNeuroscience and Biobehavioral Reviews
Volume33
Issue number8
DOIs
StatePublished - Sep 1 2009
Externally publishedYes

Keywords

  • Autism spectrum disorders
  • Connectivity
  • Empathy
  • Network
  • Von Economo neuron
  • fMRI

ASJC Scopus subject areas

  • Neuropsychology and Physiological Psychology
  • Cognitive Neuroscience
  • Behavioral Neuroscience

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