Thalamocortical Connectivity Predicts Cognition in Children Born Preterm
Overview
Authors
Affiliations
Thalamocortical connections are: essential for brain function, established early in development, and significantly impaired following preterm birth. Impaired cognitive abilities in preterm infants may be related to disruptions in thalamocortical connectivity. The aim of this study was to test the hypothesis: thalamocortical connectivity in the preterm brain at term-equivalent is correlated with cognitive performance in early childhood. We examined 57 infants who were born <35 weeks gestational age (GA) and had no evidence of focal abnormality on magnetic resonance imaging (MRI). Infants underwent diffusion MRI at term and cognitive performance at 2 years was assessed using the Bayley III scales of Infant and Toddler development. Cognitive scores at 2 years were correlated with structural connectivity between the thalamus and extensive cortical regions at term. Mean thalamocortical connectivity across the whole cortex explained 11% of the variance in cognitive scores at 2 years. The inclusion of GA at birth and parental socioeconomic group in the model explained 30% of the variance in subsequent cognitive performance. Identifying impairments in thalamocortical connectivity as early as term equivalent can help identify those infants at risk of subsequent cognitive delay and may be useful to assess efficacy of potential treatments at an early age.
Calixto C, Cortes-Albornoz M, Velasco-Annis C, Karimi D, Afacan O, Warfield S Hum Brain Mapp. 2025; 46(3):e70159.
PMID: 39950579 PMC: 11826438. DOI: 10.1002/hbm.70159.
Premature birth changes wiring constraints in neonatal structural brain networks.
Mousley A, Akarca D, Astle D Nat Commun. 2025; 16(1):490.
PMID: 39779695 PMC: 11711473. DOI: 10.1038/s41467-024-55178-x.
Developmental trajectories in high-risk NICU graduates during the first year of life.
McDonald N, Qian Q, Ferrario C, Senturk D, Iyer S, Jeste S Early Hum Dev. 2024; 201:106183.
PMID: 39705921 PMC: 11830516. DOI: 10.1016/j.earlhumdev.2024.106183.
Functional connectivity of the pediatric brain.
Argyropoulou M, Xydis V, Astrakas L Neuroradiology. 2024; 66(11):2071-2082.
PMID: 39230715 DOI: 10.1007/s00234-024-03453-5.
Alterations in aperiodic and periodic EEG activity in young children with Down syndrome.
Geiger M, Hurewitz S, Pawlowski K, Baumer N, Wilkinson C Neurobiol Dis. 2024; 200:106643.
PMID: 39173846 PMC: 11452906. DOI: 10.1016/j.nbd.2024.106643.