Cited by 465Hemispheric Asymmetry in NeuroscienceFetal and Pediatric Neurological DisordersAdvanced Neuroimaging Techniques and Applications

Regional Gray Matter Growth, Sexual Dimorphism, and Cerebral Asymmetry in the Neonatal Brain

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Gilmore, John H., Lin, Weili, Prastawa, Marcel W., Looney, Christopher B., Vetsa, Y. Sampath K., Knickmeyer, Rebecca C., Evans, Dianne D., Smith, J. Keith +3 more·2007·The Journal of Neuroscience

Abstract

Although there has been recent interest in the study of childhood and adolescent brain development, very little is known about normal brain development in the first few months of life. In older children, there are regional differences in cortical gray matter development, whereas cortical gray and white matter growth after birth has not been studied to a great extent. The adult human brain is also characterized by cerebral asymmetries and sexual dimorphisms, although very little is known about how these asymmetries and dimorphisms develop. We used magnetic resonance imaging and an automatic segmentation methodology to study brain structure in 74 neonates in the first few weeks after birth. We found robust cortical gray matter growth compared with white matter growth, with occipital regions growing much faster than prefrontal regions. Sexual dimorphism is present at birth, with males having larger total brain cortical gray and white matter volumes than females. In contrast to adults and older children, the left hemisphere is larger than the right hemisphere, and the normal pattern of fronto-occipital asymmetry described in older children and adults is not present. Regional differences in cortical gray matter growth are likely related to differential maturation of sensory and motor systems compared with prefrontal executive function after birth. These findings also indicate that whereas some adult patterns of sexual dimorphism and cerebral asymmetries are present at birth, others develop after birth.

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Crossref · 10.1523/jneurosci.3339-06.2007

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  • Brain volume is about 35% of adult volume two to three weeks after birth, doubles from term size in the first year, and increases an additional 15% in the second year to about 80% of adult size.

    “Brain volume is about 35% of adult volume 2–3 weeks after birth after birth13, doubles from term size in the first year of life and increases an additional 15% in the second to about 80% of adult size3.”
  • Sexual dimorphism is present at birth in cortical gray matter volume.

    “With regards to cortical gray matter volume, Gilmore et al. (2007) demonstrated that sexual dimorphism is present at birth.”

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Research works printed but not linked: 1

  1. Sampaio RC, Truwit CL (2001) Myelination in the developing brain. In: Handbook of developmental cognitive neuroscience (Nelson CA, Luci- ana M, eds), pp 35-44. Cambridge, MA: MIT.

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Authors
Gilmore, J. H., Lin, W., Prastawa, M. W., Looney, C. B., Vetsa, Y. S. K., Knickmeyer, R. C., Evans, D. D., Smith, J. K., Hamer, R. M., Lieberman, J. A., & Gerig, G.
Affiliations
  • University of North Carolina at Chapel Hill (US)
  • Columbia University (US)
Venue
The Journal of Neuroscience
Published
2007-02-07
Volume
27
Issue
6
Pages
1255-1260
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2053479268
Cited by
465
References
52
Citations by year
2026: 17 · 2025: 21 · 2024: 27 · 2023: 29 · 2022: 15 · 2021: 23 · 2020: 30 · 2019: 28 · 2018: 35 · 2017: 23 · 2016: 19 · 2015: 22 · 2014: 23 · 2013: 25 · 2012: 27
FWCI
11.14
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Carolina Digital Repository (University of North Carolina at Chapel Hill) (submittedVersion)
  • UNC Libraries
Funders
  • National Institute of Mental Health (MH064065, P50MH064065)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (#HD03110, P30HD003110, HD-40127, T32HD040127)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Hemispheric Asymmetry in Neuroscience
  • Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Fetal and Pediatric Neurological Disorders
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
neonatal brain development, sexual dimorphism, brain asymmetry, hemispheric lateralization, prefrontal cortex maturation, brain segmentation
MeSH terms
Brain, Cerebral Cortex, Dominance, Cerebral, Female, Follow-Up Studies, Gestational Age, Humans, Infant, Newborn, Magnetic Resonance Imaging, Male, Neurons, Organ Size, Reference Values, Sex Characteristics, Cohort Studies, Racial Groups

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