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Published in: Brain Structure and Function 8/2017

Open Access 01-11-2017 | Original Article

Healthy cortical development through adolescence and early adulthood

Authors: Natalie J. Forde, Lisa Ronan, Marcel P. Zwiers, Lizanne J. S. Schweren, Aaron F. Alexander-Bloch, Barbara Franke, Stephen V. Faraone, Jaap Oosterlaan, Dirk J. Heslenfeld, Catharina A. Hartman, Jan K. Buitelaar, Pieter J. Hoekstra

Published in: Brain Structure and Function | Issue 8/2017

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Abstract

Adolescence is a period of significant brain changes; however, the effects of age and sex on cortical development are yet to be fully characterized. Here, we utilized innovative intrinsic curvature (IC) analysis, along with the traditional cortical measures [cortical thickness (CT), local gyrification index (LGI), and surface area (SA)], to investigate how these indices (1) relate to each other and (2) depend on age and sex in adolescent cortical development. T1-weighted magnetic resonance images from 218 healthy volunteers (age range 8.3–29.2 years, M[SD] = 16.5[3.4]) were collected at two sites and processed with FreeSurfer and Caret software packages. Surface indices were extracted per cortex area (frontal, parietal, occipital, temporal, insula, and cingulate). Correlation analyses between the surface indices were conducted and age curves were modelled using generalized additive mixed-effect models. IC showed region-specific associations with LGI, SA, and CT, as did CT with LGI. SA was positively associated with LGI in all regions and CT in none. CT and LGI, but not SA, were inversely associated with age in all regions. IC was inversely associated with age in all but the occipital region. For all regions, males had larger cortical SA than females. Males also had larger LGI in all regions and larger IC of the frontal area; however, these effects were accounted for by sex differences in SA. There were no age-by-sex interactions. The study of IC adds a semi-independent, sensitive measure of cortical morphology that relates to the underlying cytoarchitecture and may aid understanding of normal brain development and deviations from it.
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Metadata
Title
Healthy cortical development through adolescence and early adulthood
Authors
Natalie J. Forde
Lisa Ronan
Marcel P. Zwiers
Lizanne J. S. Schweren
Aaron F. Alexander-Bloch
Barbara Franke
Stephen V. Faraone
Jaap Oosterlaan
Dirk J. Heslenfeld
Catharina A. Hartman
Jan K. Buitelaar
Pieter J. Hoekstra
Publication date
01-11-2017
Publisher
Springer Berlin Heidelberg
Published in
Brain Structure and Function / Issue 8/2017
Print ISSN: 1863-2653
Electronic ISSN: 1863-2661
DOI
https://doi.org/10.1007/s00429-017-1424-0

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