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@ARTICLE{Tsigaras:1053974,
author = {Tsigaras, Thanos and Dukart, Juergen and Oldham, Stuart and
Eickhoff, Simon B and Paquola, Casey},
title = {{D}isentangling the influences of pre- and postnatal
periods on human cortical microstructure},
journal = {bioRxiv beta},
address = {Cold Spring Harbor},
publisher = {Cold Spring Harbor Laboratory, NY},
reportid = {FZJ-2026-01650},
year = {2025},
abstract = {During late gestation and early postnatal development a
combination of intrinsic and extrinsic factors drive the
maturation of the human cortex. This process is regionally
heterogeneous, with cortical areas developing at different
paces and trajectories. Leveraging submillimetre
T1-weighted/T2w-weighted (T1w/T2w) magnetic resonance
imaging (MRI) from pre- and full-term neonates (n = 599, 0-7
weeks), we sampled intracortical microstructure profiles
across the cortex and characterised the profiles’ shapes
according to their central moments. We found that
gestational age at birth dominated the effects on early
cortical development, with significant, global increases in
microstructural density, increasing intracortical
homogeneity and a bimodal change of the microstructural
balance between superficial and deeper cortical layers. On
the other hand, weeks since birth (i.e. postnatal age)
exhibited different effects on microstructure, with density
increasing at a slower pace, increasing intracortical
heterogeneity, and intracortical balance only shifting
towards deeper layers in posterior temporal, occipital,
medial parietal areas and some prefrontal areas. These
effects align with low spatial-frequency geometric
eigenmodes of the human cortex, specifically the
anterior-posterior, superior-inferior and central-polar
axes. Our findings demonstrate that separating prenatal from
postnatal influences, and analysing intracortical profiles
rather than macroscale features, provides finer-grained
insights into how human cortical microstructure changes
during perinatal development and lays the groundwork for
investigating the biological underpinnings that govern
normative cortical maturation.},
cin = {INM-7},
ddc = {570},
cid = {I:(DE-Juel1)INM-7-20090406},
pnm = {5251 - Multilevel Brain Organization and Variability
(POF4-525) / DFG project G:(GEPRIS)524408221 -
Mikrostrukturelle Entwicklung des Gehirns: Den Ursprüngen
höherer menschliche Kognition auf der Spur (524408221)},
pid = {G:(DE-HGF)POF4-5251 / G:(GEPRIS)524408221},
typ = {PUB:(DE-HGF)25},
doi = {10.1101/2025.08.12.669812},
url = {https://juser.fz-juelich.de/record/1053974},
}