Weak network efficiency in young children with Autism Spectrum Disorder: Evidence from a functional near-infrared

Yanwei Li1, Dongchuan Yu1

  • 1Key Laboratory of Child Development and Learning Science of Ministry of Education, Southeast University, Nanjing, Jiangsu, China; Research Center for Learning Science, Southeast University, Nanjing, Jiangsu, China.

Brain and Cognition
|July 31, 2016
PubMed

Insights

Functional near infrared spectroscopy (fNIRS) reveals reduced network efficiency in young children with Autism Spectrum Disorder (ASD). This neuroimaging technique shows potential for diagnosing ASD in children by analyzing functional brain networks.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Biomedical Engineering

Background:

  • Functional near infrared spectroscopy (fNIRS) is well-suited for pediatric neuroimaging and ecological assessments.
  • Limited research has utilized fNIRS for the clinical diagnosis of Autism Spectrum Disorder (ASD) in young children.
  • Understanding functional brain network alterations in young children with ASD is crucial for early diagnosis and intervention.

Purpose of the Study:

  • To quantitatively analyze functional brain networks in young children (4.8-8.0 years) with and without ASD using fNIRS.
  • To investigate network efficiency and lobe-level connectivity in the functional networks of children with and without ASD.
  • To explore the potential of fNIRS-derived network features for ASD classification in young children.

Main Methods:

  • Employed functional near infrared spectroscopy (fNIRS) to measure brain activity in young children during cartoon viewing.
  • Analyzed functional network efficiency across various thresholds for network binarization.
  • Utilized k-means clustering with network efficiencies as feature parameters for classification.

Main Results:

  • Young children with ASD exhibited significantly weaker functional network efficiency compared to controls.
  • A classification accuracy of 83.3% was achieved in distinguishing ASD from controls using network efficiencies.
  • Reduced lobe-level connectivity was observed in the right prefrontal cortex of children with ASD, affecting connections to the left prefrontal and bilateral temporal cortices.

Conclusions:

  • The right prefrontal cortex plays a significant role in the psychopathology of young children with ASD at the functional network architecture level.
  • Weakened functional lobe-connectivity, particularly involving the right prefrontal cortex, is characteristic of ASD in young children.
  • fNIRS-based analysis of functional brain networks shows promise as a diagnostic tool for ASD in early childhood.

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