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Related Concept Videos

Biological Influences on Intelligence01:30

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Intelligence is often thought to be linked to brain size, but the relationship is more complex than that. While brain size does correlate modestly with some abilities, like verbal skills, the connection is weaker for others, such as spatial reasoning. Other factors, like brain structure, also play crucial roles. For instance, despite Einstein's smaller-than-average brain, his parietal cortex, which is involved in spatial reasoning, was 15% wider, suggesting that neural density might matter...
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Despite the strong genetic influence on traits like intelligence, environmental factors significantly shape outcomes. For example, while over 90% of height variation is due to genetic differences, environmental factors such as nutrition also have a notable impact. Similarly, for intelligence, changes in a child's surroundings can significantly alter their IQ. Research shows that enriched environments boost children's academic success and help them develop key cognitive skills. Children...
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Postnatal Brain Trajectories and Maternal Intelligence Predict Childhood Outcomes in Complex CHD.

Vincent K Lee1,2, Rafael Ceschin2,3, William T Reynolds2,3

  • 1Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA 15260, USA.

Journal of Clinical Medicine
|May 25, 2024
PubMed
Summary

Early brain development in complex congenital heart disease (CHD) patients impacts neurodevelopment. Maternal IQ significantly influences language outcomes over time, exceeding genetic factors.

Keywords:
MRIcongenital heart disease (CHD)diffusion tensor imagingmaternal IQneurodevelopmental deficitsregional brain volumesstructural brain trajectorieswhite matter tract

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Pediatric Cardiology

Background:

  • Complex congenital heart disease (CHD) poses risks for neurodevelopmental deficits.
  • Early identification of predictive factors is crucial for intervention.

Purpose of the Study:

  • To investigate if early brain structural trajectories predict neurodevelopmental outcomes in complex CHD.
  • To assess the cumulative risk of clinical, genetic, and demographic factors.

Main Methods:

  • Structural MRI and neurodevelopmental assessments in 95 neonates with complex CHD.
  • Calculation of brain region volumes and white matter tract integrity trajectories.
  • Multi-variable models analyzing risk factors and outcomes (cognitive, language, visuo-motor).

Main Results:

  • Reduced brainstem and white matter volumetric trajectories predicted poorer language outcomes at 3 and 5 years.
  • Maternal IQ was the strongest predictor of language variance, increasing cumulatively over time.
  • Genetic abnormality's contribution to variance decreased significantly by 5 years.

Conclusions:

  • Postnatal white matter trajectories are key predictors of early neurodevelopmental outcomes in complex CHD.
  • Maternal IQ's cumulative influence highlights the importance of heritable and parent-based environmental factors.
  • Early brain structure and maternal IQ are critical considerations for managing neurodevelopmental risks in CHD.