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Measurement Of Neuromagnetic Brain Function In Pre-school Children With Custom Sized MEG
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Measurement Of Neuromagnetic Brain Function In Pre-school Children With Custom Sized MEG

Published on: February 19, 2010

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Atypical resting state neuromagnetic connectivity and spectral power in very preterm children

Nataliia Kozhemiako1, Adonay Nunes1, Vasily A Vakorin1,2,3

  • 1Biomedical Physiology and Kinesiology, Simon Fraser University, Burnaby, BC, Canada.

Journal of Child Psychology and Psychiatry, and Allied Disciplines
|February 27, 2019
PubMed

Insights

Very preterm children show altered brain connectivity and lower spectral power at school age, linked to neonatal experiences and long-term cognitive and behavioral issues. These findings highlight how disrupted neurophysiological networks may mediate outcomes.

Area of Science:

  • Neuroscience
  • Developmental Psychology
  • Pediatrics

Background:

  • Children born very preterm often experience cognitive difficulties in school, even without major brain injury.
  • Underlying neurophysiological alterations and their link to neonatal factors are not well understood.
  • This study investigates brain connectivity and spectral power in very preterm children.

Purpose of the Study:

  • To examine interregional connectivity and spectral power in very preterm children at school age.
  • To explore relationships between neurophysiology, neonatal variables, and long-term outcomes (IQ, executive functions, behavior).

Main Methods:

  • Resting-state magnetoencephalography (MEG) and psychometric data collected from 8-year-old children.
  • Comparison of three groups: Extremely Low Gestational Age (ELGA), Very Low Gestational Age (VLGA), and full-term.
  • Analysis of interregional phase synchrony, spectral power, and associations using Partial Least Squares (PLS).

Main Results:

  • The ELGA group exhibited greater theta-band connectivity, particularly in frontal regions.
  • Lower overall spectral power was observed in ELGA and VLGA groups compared to full-term.
  • Neurophysiological connectivity strongly correlated with adverse neonatal experiences and outcomes.

Conclusions:

  • Very preterm children display atypical neuromagnetic brain activity and connectivity at school age.
  • Connectivity alterations were most prominent in the ELGA group.
  • Disrupted neurophysiological networks appear to mediate the link between neonatal events and later cognitive/behavioral difficulties.
Abstract

Keywords:
Very pretermchildrenearly adversitymagnetoencephalographyneonatal stresspainresting state connectivity

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