Cited by 19Language Development and DisordersNeurobiology of Language and BilingualismAdvanced Neuroimaging Techniques and Applications

Age-related changes in tissue signal properties within cortical areas important for word understanding in 12- to 19-month-old infants

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Travis, Katherine E., Curran, Megan M., Torres, Christina, Leonard, Matthew K., Brown, Timothy T., Dale, Anders M., Elman, Jeffrey L., Halgren, Eric·2014·Cerebral Cortex

Abstract

Recently, our laboratory has shown that the neural mechanisms for encoding lexico-semantic information in adults operate functionally by 12-18 months of age within left frontotemporal cortices (Travis et al., 2011. Spatiotemporal neural dynamics of word understanding in 12- to 18-month-old-infants. Cereb Cortex. 8:1832-1839). However, there is minimal knowledge of the structural changes that occur within these and other cortical regions important for language development. To identify regional structural changes taking place during this important period in infant development, we examined age-related changes in tissue signal properties of gray matter (GM) and white matter (WM) intensity and contrast. T1-weighted surface-based measures were acquired from 12- to 19-month-old infants and analyzed using a general linear model. Significant age effects were observed for GM and WM intensity and contrast within bilateral inferior lateral and anterovental temporal regions, dorsomedial frontal, and superior parietal cortices. Region of interest (ROI) analyses revealed that GM and WM intensity and contrast significantly increased with age within the same left lateral temporal regions shown to generate lexico-semantic activity in infants and adults. These findings suggest that neurophysiological processes supporting linguistic and cognitive behaviors may develop before cellular and structural maturation is complete within associative cortices. These results have important implications for understanding the neurobiological mechanisms relating structural to functional brain development.

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  1. Conel, 1955, The cortex of a fifteen month old infant
  2. Flechsig, 1920, Anatomic des menschlichen gehirns und ruckenmarks auf myelogenetischer gundlange

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Authors
Travis, K. E., Curran, M. M., Torres, C., Leonard, M. K., Brown, T. T., Dale, A. M., Elman, J. L., & Halgren, E.
Affiliations
University of California San Diego (US)
Corresponding author
Travis, Katherine E.
Venue
Cerebral Cortex
Published
2013-02-28
Volume
24
Issue
7
Pages
1948-1955
ISSN
  • 1047-3211 (ISSN-L)
  • 1460-2199
OpenAlex
W2143821766
Cited by
19
References
76
Citations by year
2025: 1 · 2022: 2 · 2021: 2 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 1 · 2016: 1 · 2015: 4 · 2014: 2
FWCI
4.83
Type
journal article
Language
en
Open access
Locations
  • Cerebral Cortex (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health
  • National Institute of Neurological Disorders and Stroke (R01 NS018741-23A1)
  • Eunice Kennedy Shriver National Institute of Child Health and Human Development (R21 HD066364)
Topics
  • Social Sciences › Psychology › Developmental and Educational Psychology › Language Development and Disorders
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neurobiology of Language and Bilingualism
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
infant brain development, age-related changes, T1-weighted imaging, word understanding, lexical-semantic processing, language development, functional maturation, inferior temporal cortex, dorsomedial frontal cortex, superior parietal cortex
MeSH terms
Aging, Brain Mapping, Cerebral Cortex, Female, Humans, Image Processing, Computer-Assisted, Infant, Language Development, Magnetic Resonance Imaging, Male, Vocabulary, Comprehension

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