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@ARTICLE{Tscherpel:874655,
author = {Tscherpel, Caroline and Hensel, Lukas and Lemberg,
Katharina and Vollmer, Mattias and Volz, Lukas J. and Fink,
Gereon R. and Grefkes, Christian},
title = {{T}he differential roles of contralesional frontoparietal
areas in cortical reorganization after stroke},
journal = {Brain stimulation},
volume = {13},
number = {3},
issn = {1935-861X},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {FZJ-2020-01571},
pages = {614 - 624},
year = {2020},
abstract = {BackgroundStudies examining the contribution of
contralesional brain regions to motor recovery after stroke
have revealed conflicting results comprising both supporting
and disturbing influences. Especially the relevance of
contralesional brain regions beyond primary motor cortex
(M1) has rarely been studied, particularly concerning the
temporal dynamics post-stroke.MethodsWe, therefore, used
online transcranial magnetic stimulation (TMS) interference
to longitudinally assess the role of contralesional (right)
frontoparietal areas for recovery of hand motor function
after left hemispheric stroke: contralesional M1,
contralesional dorsal premotor cortex (dPMC), and
contralesional anterior intraparietal sulcus (IPS). Fourteen
stroke patients and sixteen age-matched healthy subjects
performed motor tasks of varying complexity with their
(paretic) right hand. Motor performance was quantified using
three-dimensional kinematic data. All patients were assessed
twice, (i) in the first week, and (ii) after more than three
months post-stroke.ResultsWhile we did not observe a
significant effect of TMS interference on movement
kinematics following the stimulation of contralesional M1
and dPMC in the first week post-stroke, we found
improvements of motor performance upon interference with
contralesional IPS across motor tasks early after stroke, an
effect that persisted into the later phase. By contrast, for
dPMC, TMS-induced deterioration of motor performance was
only evident three months post-stroke, suggesting that a
supportive role of contralesional premotor cortex might
evolve with reorganization.ConclusionWe here highlight
time-sensitive and region-specific effects of contralesional
frontoparietal areas after left hemisphere stroke, which may
influence on neuromodulation regimes aiming at supporting
recovery of motor function post-stroke.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572)},
pid = {G:(DE-HGF)POF3-572},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:32289686},
UT = {WOS:000533522600019},
doi = {10.1016/j.brs.2020.01.016},
url = {https://juser.fz-juelich.de/record/874655},
}