Aberrant Structural Brain Connectivity in Adolescents with Attentional Problems Who Were Born Prematurely

Area of Science:

• Neuroscience
• Developmental Psychology
• Medical Imaging

Background:

• Premature birth is associated with attentional problems in adolescents.
• Previous research on inattention has not focused on the impact of premature birth on brain connectivity.

Purpose of the Study:

• Identify neural correlates of attentional problems in adolescents born prematurely.
• Determine neonatal predictors of brain connectivity and attention issues.

Main Methods:

• Included 24 adolescents born prematurely.
• Utilized Magnetic Resonance (MR) imaging and cognitive assessments shortly after birth and in adolescence.
• Assessed structural brain connectivity using diffusion tensor imaging and tractography in adolescence.

Main Results:

• Adolescents with attention deficits showed significantly lower fractional anisotropy in axonal pathways connecting major brain lobes.
• The temporoparietal connection between the left precuneus and left middle temporal gyrus was most affected.
• Low birth weight and ventriculomegaly predicted temporoparietal hypoconnectivity; neonatal factors did not directly correlate with attention deficits.

Conclusions:

• Aberrant structural brain connectivity, specifically temporoparietal hypoconnectivity, is identified in prematurely born adolescents with attention problems.
• Low birth weight is a potential neonatal predictor of this hypoconnectivity.
• Findings enhance understanding of the neural basis and etiology of inattention following premature birth.