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@ARTICLE{Stumme:874989,
author = {Stumme, Johanna and Jockwitz, Christiane and Hoffstaedter,
Felix and Amunts, Katrin and Caspers, Svenja},
title = {{F}unctional network reorganization in older adults:
{G}raph-theoretical analyses of age, cognition and sex},
journal = {NeuroImage},
volume = {214},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2020-01751},
pages = {116756},
year = {2020},
abstract = {Healthy aging has been associated with a decrease in
functional network specialization. Importantly, variability
of alterations of functional connectivity is especially high
across older adults. Whole-brain functional network
reorganization, though, and its impact on cognitive
performance within particularly the older generation is
still a matter of debate. We assessed resting state
functional connectivity (RSFC) in 772 older adults (55-85
years, 421 males) using a graph-theoretical approach.
Results show overall age-related increases of between- and
decreases of within-network RSFC. With similar phenomena
observed in young to middle-aged adults, i.e. that RSFC
reorganizes towards more pronounced functional network
integration, the current results amend such evidence for the
old age. The results furthermore indicate that RSFC
reorganization in older adults particularly pertain to early
sensory networks (e.g. visual and sensorimotor network).
Importantly, RSFC differences of these early sensory
networks were found to be a relevant mediator in terms of
the age-related cognitive performance differences. Further,
we found systematic sex-related network differences with
females showing patterns of more segregation (i.e. default
mode and ventral attention network) and males showing a
higher integrated network system (particularly for the
sensorimotor network). These findings underpin the notion of
sex-related connectivity differences, possibly facilitating
sex-related behavioral functioning.},
cin = {INM-1 / INM-7},
ddc = {610},
cid = {I:(DE-Juel1)INM-1-20090406 / I:(DE-Juel1)INM-7-20090406},
pnm = {571 - Connectivity and Activity (POF3-571) / HBP SGA2 -
Human Brain Project Specific Grant Agreement 2 (785907)},
pid = {G:(DE-HGF)POF3-571 / G:(EU-Grant)785907},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32201326},
UT = {WOS:000540068600003},
doi = {10.1016/j.neuroimage.2020.116756},
url = {https://juser.fz-juelich.de/record/874989},
}