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@ARTICLE{Roe:905341,
author = {Roe, James M. and Vidal-Piñeiro, Didac and Amlien, Inge K.
and Pan, Mengyu and Sneve, Markus H. and de Schotten, Michel
Thiebaut and Friedrich, Patrick and Sha, Zhiqiang and
Francks, Clyde and Wang, Yunpeng and Walhovd, Kristine B.
and Fjell, Anders M. and Westerhausen, René},
title = {{P}opulation-level asymmetry of the cerebral cortex:
reproducibility, lifespan changes, heritability, and
individual differences},
reportid = {FZJ-2022-00609},
year = {2021},
abstract = {Cortical asymmetry is a ubiquitous feature of brain
organization that is altered in neurodevelopmental disorders
and aging. Achieving consensus on cortical asymmetries in
humans is necessary to uncover the genetic-developmental
mechanisms that shape them and factors moderating cortical
lateralization. Here, we delineate population-level
asymmetry in cortical thickness and surface area vertex-wise
in 7 datasets and chart asymmetry trajectories across life
(4-89 years; observations = 3937; $70\%$ longitudinal). We
reveal asymmetry interrelationships, heritability, and test
associations in UK Biobank (N=~37,500). Cortical asymmetry
was robust across datasets. Whereas areal asymmetry is
predominantly stable across life, thickness asymmetry grows
in development and declines in aging. Areal asymmetry
correlates in specific regions, whereas thickness asymmetry
is globally interrelated across cortex and suggests high
directional variability in global thickness lateralization.
Areal asymmetry is moderately heritable (max h 2 SNP
$~19\%),$ and phenotypic correlations are reflected by high
genetic correlations, whereas heritability of thickness
asymmetry is low. Finally, we detected an asymmetry
association with cognition and confirm recently-reported
handedness links. Results suggest areal asymmetry is
developmentally stable and arises in early life, whereas
developmental changes in thickness asymmetry may lead to
directional variability of global thickness lateralization.
Our results bear enough reproducibility to serve as a
standard for future brain asymmetry studies.},
cin = {INM-7},
cid = {I:(DE-Juel1)INM-7-20090406},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525)},
pid = {G:(DE-HGF)POF4-5251},
typ = {PUB:(DE-HGF)25},
doi = {10.1101/2021.11.25.469988},
url = {https://juser.fz-juelich.de/record/905341},
}