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@ARTICLE{Park:888030,
author = {Park, Bo-yong and Vos de Wael, Reinder and Paquola, Casey
and Larivière, Sara and Benkarim, Oualid and Royer, Jessica
and Tavakol, Shahin and Cruces, Raul R. and Li, Qiongling
and Valk, Sofie L. and Margulies, Daniel S. and Mišić,
Bratislav and Bzdok, Danilo and Smallwood, Jonathan and
Bernhardt, Boris C.},
title = {{S}ignal diffusion along connectome gradients and inter-hub
routing differentially contribute to dynamic human brain
function},
journal = {NeuroImage},
volume = {224},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2020-04608},
pages = {117429 -},
year = {2021},
abstract = {Human cognition is dynamic, alternating over time between
externally-focused states and more abstract, often
self-generated, patterns of thought. Although cognitive
neuroscience has documented how networks anchor particular
modes of brain function, mechanisms that describe
transitions between distinct functional states remain poorly
understood. Here, we examined how time-varying changes in
brain function emerge within the constraints imposed by
macroscale structural network organization. Studying a large
cohort of healthy adults (n = 326), we capitalized on
manifold learning techniques that identify low dimensional
representations of structural connectome organization and we
decomposed neurophysiological activity into distinct
functional states and their transition patterns using Hidden
Markov Models. Structural connectome organization predicted
dynamic transitions anchored in sensorimotor systems and
those between sensorimotor and transmodal states. Connectome
topology analyses revealed that transitions involving
sensorimotor states traversed short and intermediary
distances and adhered strongly to communication mechanisms
of network diffusion. Conversely, transitions between
transmodal states involved spatially distributed hubs and
increasingly engaged long-range routing. These findings
establish that the structure of the cortex is optimized to
allow neural states the freedom to vary between distinct
modes of processing, and so provides a key insight into the
neural mechanisms that give rise to the flexibility of human
cognition.Keywords: Hidden Markov Model; diffusion MRI;
functional dynamics; gradients; multimodal imaging;
structural connectome.},
cin = {INM-7},
ddc = {610},
cid = {I:(DE-Juel1)INM-7-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:33038538},
UT = {WOS:000600796800043},
doi = {10.1016/j.neuroimage.2020.117429},
url = {https://juser.fz-juelich.de/record/888030},
}