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@ARTICLE{Caspers:892757,
author = {Caspers, Julian and Rubbert, Christian and Eickhoff, Simon
B. and Hoffstaedter, Felix and Südmeyer, Martin and
Hartmann, Christian J. and Sigl, Benjamin and Teichert,
Nikolas and Aissa, Joel and Turowski, Bernd and Schnitzler,
Alfons and Mathys, Christian},
title = {{W}ithin- and across-network alterations of the
sensorimotor network in {P}arkinson’s disease},
journal = {Neuroradiology},
volume = {63},
issn = {0028-3940},
address = {Heidelberg},
publisher = {Springer},
reportid = {FZJ-2021-02314},
pages = {2073–2085},
year = {2021},
abstract = {Purpose: Parkinson's disease (PD) is primarily defined by
motor symptoms and is associated with alterations of
sensorimotor areas. Evidence for network changes of the
sensorimotor network (SMN) in PD is inconsistent and a
systematic evaluation of SMN in PD yet missing. We
investigate functional connectivity changes of the SMN in
PD, both, within the network, and to other large-scale
connectivity networks.Methods: Resting-state fMRI was
assessed in 38 PD patients under long-term dopaminergic
treatment and 43 matched healthy controls (HC). Independent
component analysis (ICA) into 20 components was conducted
and the SMN was identified within the resulting networks.
Functional connectivity within the SMN was analyzed using a
dual regression approach. Connectivity between the SMN and
the other networks from group ICA was investigated with
FSLNets. We investigated for functional connectivity changes
between patients and controls as well as between medication
states (OFF vs. ON) in PD and for correlations with clinical
parameters.Results: There was decreased functional
connectivity within the SMN in left inferior parietal and
primary somatosensory cortex in PD OFF. Across networks,
connectivity between SMN and two motor networks as well as
two visual networks was diminished in PD OFF. All
connectivity decreases partially normalized in PD
ON.Conclusion: PD is accompanied by functional connectivity
losses of the SMN, both, within the network and in
interaction to other networks. The connectivity changes in
short- and long-range connections are probably related to
impaired sensory integration for motor function in PD. SMN
decoupling can be partially compensated by dopaminergic
therapy.},
cin = {INM-7 / INM-1},
ddc = {610},
cid = {I:(DE-Juel1)INM-7-20090406 / I:(DE-Juel1)INM-1-20090406},
pnm = {525 - Decoding Brain Organization and Dysfunction
(POF4-525)},
pid = {G:(DE-HGF)POF4-525},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:34019112},
UT = {WOS:000652934600003},
doi = {10.1007/s00234-021-02731-w},
url = {https://juser.fz-juelich.de/record/892757},
}