Cited by 391Functional Brain Connectivity StudiesNeural and Behavioral Psychology StudiesAdvanced Neuroimaging Techniques and Applications

Brain maturation in adolescence: concurrent changes in neuroanatomy and neurophysiology

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Whitford, Thomas J., Rennie, Christopher J., Grieve, Stuart M., Clark, C. Richard, Gordon, Evian, Williams, Leanne M.·2007·Human Brain Mapping

Abstract

Adolescence to early adulthood is a period of dramatic transformation in the healthy human brain. However, the relationship between the concurrent structural and functional changes remains unclear. We investigated the impact of age on both neuroanatomy and neurophysiology in the same healthy subjects (n = 138) aged 10 to 30 years using magnetic resonance imaging (MRI) and resting electroencephalography (EEG) recordings. MRI data were segmented into gray and white matter images and parcellated into large‐scale regions of interest. Absolute EEG power was quantified for each lobe for the slow‐wave, alpha and beta frequency bands. Gray matter volume was found to decrease across the age bracket in the frontal and parietal cortices, with the greatest change occurring in adolescence. EEG activity, particularly in the slow‐wave band, showed a similar curvilinear decline to gray matter volume in corresponding cortical regions. An inverse pattern of curvilinearly increasing white matter volume was observed in the parietal lobe. We suggest that the reduction in gray matter primarily reflects a reduction of neuropil, and that the corresponding elimination of active synapses is responsible for the observed reduction in EEG power. Hum Brain Mapp, 2007. © 2006 Wiley‐Liss, Inc.

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  • Frontal and parietal cortical gray matter volume decreases across 5-30 years and exhibits curvilinear trajectories closely correlated with loss of slow-wave power in the same areas.

    “Interestingly, frontal and parietal cortical gray matter (but not white matter) volume decreases across this same age bracket, and exhibits curvilinear trajectories that are closely correlated to the loss of slow-wave power in these same areas (Buchmann et al., 2011; Smit et al., 2012; Whitford et al., 2007).”
  • These coincident trajectories support the hypothesis that developmental changes in baseline electrophysiological signatures may primarily be subserved by reduction of neuropil and progressive synapse elimination.

    “These coincident trajectories have provided key support for the hypothesis that developmental changes in baseline electrophysiological signatures may primarily be subserved by reduction of neuropil and progressive synapse elimination (Buchmann et al., 2011; Smit et al., 2012; Whitford et al., 2007).”

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Authors
Whitford, T. J., Rennie, C. J., Grieve, S. M., Clark, C. R., Gordon, E., & Williams, L. M.
Affiliations
  • The University of Sydney (AU)
  • Flinders University (AU)
Venue
Human Brain Mapping
Publisher
Wiley
Published
2007-02-13
Volume
28
Issue
3
Pages
228-237
ISSN
  • 1065-9471 (ISSN-L)
  • 1097-0193
OpenAlex
W2110010422
Cited by
391
References
44
Citations by year
2026: 14 · 2025: 19 · 2024: 27 · 2023: 23 · 2022: 24 · 2021: 35 · 2020: 19 · 2019: 18 · 2018: 20 · 2017: 17 · 2016: 17 · 2015: 21 · 2014: 17 · 2013: 20 · 2012: 20
FWCI
5.34
Type
journal article
Language
en
Open access
Locations
  • Human Brain Mapping (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Flinders Academic Commons (Flinders University) (submittedVersion)
Funders
Macquarie University
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Functional Brain Connectivity Studies
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural and Behavioral Psychology Studies
  • Health Sciences › Medicine › Radiology, Nuclear Medicine and Imaging › Advanced Neuroimaging Techniques and Applications
Keywords
brain maturation, adolescence, gray matter volume, white matter volume, EEG spectral power, slow-wave activity, alpha and beta bands, neuropil, synaptic pruning, cortical development, age-related changes
MeSH terms
Adolescent, Adult, Age Factors, Brain, Brain Mapping, Child, Electroencephalography, Female, Humans, Image Processing, Computer-Assisted, Magnetic Resonance Imaging, Male

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