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Updated: May 30, 2026
Preterm EEG: A Multimodal Neurophysiological Protocol
Published on: February 18, 2012
The effect of preterm birth on thalamic and cortical development
Gareth Ball1, James P Boardman, Daniel Rueckert
1Centre for Developing Brain, Imperial College London and MRC Clinical Sciences Centre, Hammersmith Hospital, London W12 0NN, UK.
Insights
Preterm birth impacts brain development, causing reduced thalamic volume and affecting cognitive functions. This thalamic injury is linked to widespread macro- and microstructural brain abnormalities in infants.
Area of Science:
- Neuroscience
- Developmental Neuroscience
- Medical Imaging
Background:
- Preterm birth is a primary cause of childhood cognitive impairment.
- Abnormalities in cerebral gray and white matter are associated with preterm birth.
- The role of thalamic development in preterm brain injury requires further investigation.
Purpose of the Study:
- To test the hypothesis that altered thalamic development is a key component of preterm brain injury.
- To investigate the association between thalamic alterations and other macro- and microstructural brain changes in preterm infants.
- To identify specific brain regions and white matter tracts affected by prematurity.
Main Methods:
- Acquisition of T(1)- and T(2)-weighted MRI and diffusion tensor imaging in 71 preterm infants.
- Utilized deformation-based morphometry, Tract-Based Spatial Statistics, and tissue segmentation for whole-brain analysis.
- Assessed the relationship between prematurity, regional tissue volume, and microstructural integrity.
Main Results:
- Increased prematurity correlated with reduced volume in the thalamus, hippocampus, orbitofrontal lobe, posterior cingulate cortex, and centrum semiovale.
- Reduced thalamic volume predicted lower cortical volume and decreased volumes in frontal and temporal lobes.
- Thalamic volume reduction was associated with increased diffusivity and reduced fractional anisotropy in corticospinal tracts and corpus callosum.
Conclusions:
- Preterm birth significantly impacts thalamic development, leading to macro- and microstructural abnormalities in connected brain regions.
- Disruption of thalamocortical system development is a key consequence of preterm delivery.
- Thalamic developmental alterations are a critical factor in cognitive impairments associated with preterm birth.
Abstract:
Preterm birth is a leading cause of cognitive impairment in childhood and is associated with cerebral gray and white matter abnormalities. Using multimodal image analysis, we tested the hypothesis that altered thalamic development is an important component of preterm brain injury and is associated with other macro- and microstructural alterations. T(1)- and T(2)-weighted magnetic resonance images and 15-direction diffusion tensor images were acquired from 71 preterm infants at term-equivalent age. Deformation-based morphometry, Tract-Based Spatial Statistics, and tissue segmentation were combined for a nonsubjective whole-brain survey of the effect of prematurity on regional tissue volume and microstructure. Increasing prematurity was related to volume reduction in the thalamus, hippocampus, orbitofrontal lobe, posterior cingulate cortex, and centrum semiovale. After controlling for prematurity, reduced thalamic volume predicted: lower cortical volume; decreased volume in frontal and temporal lobes, including hippocampus, and to a lesser extent, parietal and occipital lobes; and reduced fractional anisotropy in the corticospinal tracts and corpus callosum. In the thalamus, reduced volume was associated with increased diffusivity. This demonstrates a significant effect of prematurity on thalamic development that is related to abnormalities in allied brain structures. This suggests that preterm delivery disrupts specific aspects of cerebral development, such as the thalamocortical system.
