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@ARTICLE{Paul:1030852,
author = {Paul, Theresa and Cieslak, Matthew and Hensel, Lukas and
Wiemer, Valerie M. and Tscherpel, Caroline and Grefkes,
Christian and Grafton, Scott T. and Fink, Gereon R. and
Volz, Lukas J.},
title = {{C}orticospinal premotor fibers facilitate complex motor
control after stroke},
journal = {Annals of Clinical and Translational Neurology},
volume = {11},
number = {9},
issn = {2328-9503},
address = {Chichester [u.a.]},
publisher = {Wiley},
reportid = {FZJ-2024-05461},
pages = {2439-2449},
year = {2024},
abstract = {Objective: The corticospinal tract (CST) is considered the
most important motor output pathway comprising fibers from
the primary motor cortex (M1) and various premotor areas.
Damage to its descending fibers after stroke commonly leads
to motor impairment. While premotor areas are thought to
critically support motor recovery after stroke, the
functional role of their corticospinal output for different
aspects of post-stroke motor control remains poorly
understood.Methods: We assessed the differential role of CST
fibers originating from premotor areas and M1 in the control
of basal (single-joint muscle synergies and strength) and
complex motor control (involving inter-joint coordination
and visuomotor integration) using a novel diffusion imaging
approach in chronic stroke patients.Results: While M1
sub-tract anisotropy was positively correlated with basal
and complex motor skills, anisotropy of PMd, PMv, and SMA
sub-tracts was exclusively associated with complex motor
tasks. Interestingly, patients featuring persistent motor
deficits showed an additional positive association between
premotor sub-tract integrity and basal motor
control.Interpretation: While descending M1 output seems to
be a prerequisite for any form of upper limb movements,
complex motor skills critically depend on output from
premotor areas after stroke. The additional involvement of
premotor tracts in basal motor control in patients with
persistent deficits emphasizes their compensatory capacity
in post-stroke motor control. In summary, our findings
highlight the pivotal role of descending corticospinal
output from premotor areas for motor control after stroke,
which thus serve as prime candidates for future
interventions to amplify motor recovery.},
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 = {39073030},
UT = {WOS:001278711400001},
doi = {10.1002/acn3.52159},
url = {https://juser.fz-juelich.de/record/1030852},
}