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Updated: Jun 7, 2026
Preterm EEG: A Multimodal Neurophysiological Protocol
Published on: February 18, 2012
Altered long-range alpha-band synchronization during visual short-term memory retention in children born very preterm
Sam M Doesburg1, Urs Ribary, Anthony T Herdman
1Pediatrics, University of British Columbia, Vancouver, Canada. sdoesburg@cw.bc.ca
Insights
Children born very preterm show altered brain connectivity. Reduced alpha-band synchronization during memory tasks suggests a key role for neural oscillations in their neurocognitive development.
Area of Science:
- Neuroscience
- Developmental Psychology
- Pediatrics
Background:
- Children born very preterm often have executive function and visual-spatial processing deficits, despite normal intelligence.
- Altered structural and functional cortical connectivity is observed in very preterm children.
- Neural oscillation synchronization is a proposed mechanism for dynamic functional brain coupling during cognition.
Purpose of the Study:
- To investigate the role of oscillatory synchronization in the neurocognitive development of very preterm children.
- To examine differences in neural synchronization patterns during a visual short-term memory task between very preterm and full-term children.
Main Methods:
- Magnetoencephalography (MEG) was used to record brain activity in 7-8 year old children.
- Participants included children born very preterm and age-matched full-term controls.
- Children performed a visual short-term memory task.
Main Results:
- Very preterm children showed reduced long-range alpha-band synchronization during memory retention.
- Alpha-band synchronization correlated with task performance and visual-perceptual ability in the very preterm group.
- These findings suggest altered neural oscillatory mechanisms in very preterm children.
Conclusions:
- Cortical alpha rhythms play a critical role in the altered functional connectivity patterns seen in very preterm children.
- Altered alpha oscillatory mechanisms mediating transient cortical integration may underlie neurocognitive difficulties in this population.
- This research highlights potential targets for intervention to support neurocognitive development in school-aged children born very preterm.
Abstract:
Children born very preterm, even when intelligence is broadly normal, often experience selective difficulties in executive function and visual-spatial processing. Development of structural cortical connectivity is known to be altered in this group, and functional magnetic resonance imaging (fMRI) evidence indicates that very preterm children recruit different patterns of functional connectivity between cortical regions during cognition. Synchronization of neural oscillations across brain areas has been proposed as a mechanism for dynamically assigning functional coupling to support perceptual and cognitive processing, but little is known about what role oscillatory synchronization may play in the altered neurocognitive development of very preterm children. To investigate this, we recorded magnetoencephalographic (MEG) activity while 7-8 year old children born very preterm and age-matched full-term controls performed a visual short-term memory task. Very preterm children exhibited reduced long-range synchronization in the alpha-band during visual short-term memory retention, indicating that cortical alpha rhythms may play a critical role in altered patterns functional connectivity expressed by this population during cognitive and perceptual processing. Long-range alpha-band synchronization was also correlated with task performance and visual-perceptual ability within the very preterm group, indicating that altered alpha oscillatory mechanisms mediating transient functional integration between cortical regions may be relevant to selective problems in neurocognitive development in this vulnerable population at school age.
