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Related Experiment Video

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Early Pathological and Magnetic Resonance Detection of Cerebral Injury Using a Rat Model of Neonatal Hypoxic Ischemic Encephalopathy
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Relationship Between Early Functional and Structural Brain Developments and Brain Injury in Preterm Infants.

O De Wel1, S Van Huffel1, M Lavanga1

  • 1Department of Electrical Engineering (ESAT), STADIUS Center for Dynamical Systems, Signal Processing and Data Analytics, KU Leuven, Leuven, Belgium.

Cerebellum (London, England)
|February 3, 2021
PubMed
Summary
This summary is machine-generated.

Brain activity in preterm infants, measured by electroencephalography (EEG), correlates with brain structure development. Higher EEG complexity and continuity are linked to larger cerebellar size, highlighting the importance of brain activity for structural development.

Keywords:
EEGNeuroimagingNeuromonitoringPreterm infants

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Medical Imaging

Background:

  • Emerging research suggests a link between early brain function and morphology.
  • The hypothesis posits that enhanced brain activity promotes structural development and myelination through neuronal excitation.

Purpose of the Study:

  • To examine the relationship between early and serial electroencephalography (aEEG) maturational features in preterm infants and MRI metrics of structural brain development and injury.
  • To determine if established EEG maturational features correlate with postmenstrual age (PMA).

Main Methods:

  • 106 extremely preterm infants underwent bedside aEEGs from birth to 5 weeks and 3T-MRIs at 30 weeks PMA and term.
  • EEG maturation was assessed using spectral content, continuity (spontaneous activity transients % [SAT%] and interburst interval [IBI]), and complexity.
  • MRI data included automated segmentation for volume assessment and an MRI score; relationships between EEG and MRI measures were analyzed.

Main Results:

  • EEG complexity and SAT% positively correlated with PMA, while IBI showed an inverse association.
  • EEG complexity correlated with cerebellar size at 30 weeks PMA; event-based measures related to cerebellar size at term.
  • Higher relative power in higher EEG frequency bands inversely correlated with cerebellar width, cortical grey matter, and total brain volume at term.

Conclusions:

  • EEG continuity and complexity increase with postnatal age in preterm infants.
  • Enhanced EEG complexity and event-based features are associated with cerebellar growth, a key developmental structure in preterm infants.
  • Early brain activity plays a crucial role in subsequent structural brain development.