Cited by 114Functional Brain Connectivity StudiesInfant Development and Preterm CareNeonatal and fetal brain pathology

Machine-learning to characterise neonatal functional connectivity in the preterm brain

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Ball, G., Aljabar, P., Arichi, T., Tusor, N., Cox, D., Merchant, N., Nongena, P., Hajnal, J.V. +2 more·2016·NeuroImage

Abstract

Brain development is adversely affected by preterm birth. Magnetic resonance image analysis has revealed a complex fusion of structural alterations across all tissue compartments that are apparent by term-equivalent age, persistent into adolescence and adulthood, and associated with wide-ranging neurodevelopment disorders. Although functional MRI has revealed the relatively advanced organisational state of the neonatal brain, the full extent and nature of functional disruptions following preterm birth remain unclear. In this study, we apply machine-learning methods to compare whole-brain functional connectivity in preterm infants at term-equivalent age and healthy term-born neonates in order to test the hypothesis that preterm birth results in specific alterations to functional connectivity by term-equivalent age. Functional connectivity networks were estimated in 105 preterm infants and 26 term controls using group-independent component analysis and a graphical lasso model. A random forest-based feature selection method was used to identify discriminative edges within each network and a nonlinear support vector machine was used to classify subjects based on functional connectivity alone. We achieved 80% cross-validated classification accuracy informed by a small set of discriminative edges. These edges connected a number of functional nodes in subcortical and cortical grey matter, and most were stronger in term neonates compared to those born preterm. Half of the discriminative edges connected one or more nodes within the basal ganglia. These results demonstrate that functional connectivity in the preterm brain is significantly altered by term-equivalent age, confirming previous reports of altered connectivity between subcortical structures and higher-level association cortex following preterm birth.

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Authors
Ball, G., Aljabar, P., Arichi, T., Tusor, N., Cox, D., Merchant, N., Nongena, P., Hajnal, J. V., Edwards, A. D., & Counsell, S. J.
Affiliations
King's College London (GB)
Corresponding author
Edwards, A.D.
Venue
NeuroImage
Publisher
Elsevier BV
Published
2016-01
Volume
124
Issue
Pt A
Pages
267-275
ISSN
1053-8119 (ISSN-L)
OpenAlex
W1775388063
Cited by
114
References
74
Citations by year
2026: 1 · 2025: 6 · 2024: 13 · 2023: 12 · 2022: 21 · 2021: 12 · 2020: 14 · 2019: 10 · 2018: 16 · 2017: 6 · 2016: 3
FWCI
5.01
Type
journal article
Language
en
Open access
Locations
  • NeuroImage (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Research Portal (King's College London) (submittedVersion, cc-by)
  • Spiral (Imperial College London) (submittedVersion, cc-by)
Funders
National Institute for Health Research (NIHR) (RP-PG-0707-10154)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Infant Development and Preterm Care
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Neonatal and fetal brain pathology
Keywords
preterm birth, neonatal brain, functional connectivity, term-equivalent age, preterm infants, basal ganglia, subcortical gray matter, association cortex, functional connectivity networks, brain development, neurodevelopmental disorders
MeSH terms
Machine Learning, Brain, Brain Mapping, Female, Humans, Infant, Newborn, Infant, Premature, Magnetic Resonance Imaging, Male, Connectome

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