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Prenatal environment is associated with the pace of cortical network development over the first three years of life
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Prenatal environment is associated with the pace of cortical network development over the first three years of life
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Journal Article
Prenatal environment is associated with the pace of cortical network development over the first three years of life
2024
Overview
Environmental influences on brain structure and function during early development have been well-characterized, but whether early environments are associated with the pace of brain development is not clear. In pre-registered analyses, we use flexible non-linear models to test the theory that prenatal disadvantage is associated with differences in trajectories of intrinsic brain network development from birth to three years (
n
= 261). Prenatal disadvantage was assessed using a latent factor of socioeconomic disadvantage that included measures of mother’s income-to-needs ratio, educational attainment, area deprivation index, insurance status, and nutrition. We find that prenatal disadvantage is associated with developmental increases in cortical network segregation, with neonates and toddlers with greater exposure to prenatal disadvantage showing a steeper increase in cortical network segregation with age, consistent with accelerated network development. Associations between prenatal disadvantage and cortical network segregation occur at the local scale and conform to a sensorimotor-association hierarchy of cortical organization. Disadvantage-associated differences in cortical network segregation are associated with language abilities at two years, such that lower segregation is associated with improved language abilities. These results shed light on associations between the early environment and trajectories of cortical development.
Early environmental factors, like disadvantage, are associated with neurocognitive development. Here, the authors find that neonates and toddlers from economically disadvantaged backgrounds show accelerated brain development, with implications for language abilities in toddlerhood.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 59/57
/ Age
/ Brain
/ Brain - growth & development
/ Cerebral Cortex - growth & development
/ Child Development - physiology
/ Female
/ Humanities and Social Sciences
/ Humans
/ Infant
/ Language
/ Male
/ Neonates
/ Nerve Net - growth & development
/ Prenatal Exposure Delayed Effects
/ Science
/ Structure-function relationships
/ Toddlers
