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@ARTICLE{Mustin:1032449,
author = {Mustin, Maike and Hensel, Lukas and Fink, Gereon R. and
Grefkes, Christian and Tscherpel, Caroline},
title = {{I}ndividual contralesional recruitment in the context of
structural reserve in early motor reorganization after
stroke},
journal = {NeuroImage},
volume = {300},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2024-06255},
pages = {120828 -},
year = {2024},
abstract = {he concept of structural reserve in stroke reorganization
assumes that the relevance of the contralesional hemisphere
strongly depends on the brain tissue spared by the lesion in
the affected hemisphere. Recent studies, however, have
indicated that the contralesional hemisphere's impact
exhibits region-specific variability with concurrently
existing maladaptive and supportive influences. This
challenges traditional views, necessitating a nuanced
investigation of contralesional motor areas and their
interaction with ipsilesional networks.Our study focused on
the functional role of contralesional key motor areas and
lesion-induced connectome disruption early after
stroke.Online TMS data of twenty-five stroke patients was
analyzed to disentangle interindividual differences in the
functional roles of contralesional primary motor cortex
(M1), dorsal premotor cortex (dPMC), and anterior
interparietal sulcus (aIPS) for motor function.
Connectome-based lesion symptom mapping and corticospinal
tract lesion quantification were used to investigate how TMS
effects depend on ipsilesional structural network
properties.At group and individual levels, TMS interference
with contralesional M1 and aIPS but not dPMC led to improved
performance early after stroke. At the connectome level, a
more disturbing role of contralesional M1 was related to a
more severe disruption of the structural integrity of
ipsilesional M1 in the affected motor network. In contrast,
a detrimental influence of contralesional aIPS was linked to
less disruption of the ipsilesional M1 connectivity.Our
findings indicate that contralesional areas distinctively
interfere with motor performance early after stroke
depending on ipsilesional structural integrity, extending
the concept of structural reserve to regional specificity in
recovery of function.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {5252 - Brain Dysfunction and Plasticity (POF4-525) / DFG
project G:(GEPRIS)431549029 - SFB 1451:
Schlüsselmechanismen normaler und krankheitsbedingt
gestörter motorischer Kontrolle (431549029)},
pid = {G:(DE-HGF)POF4-5252 / G:(GEPRIS)431549029},
typ = {PUB:(DE-HGF)16},
pubmed = {39293355},
UT = {WOS:001318094400001},
doi = {10.1016/j.neuroimage.2024.120828},
url = {https://juser.fz-juelich.de/record/1032449},
}