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@ARTICLE{CardenasMorales:154026,
author = {Cardenas-Morales, L. and Volz, L. J. and Michely, J. and
Rehme, A. K. and Pool, E.-M. and Nettekoven, C. and
Eickhoff, Simon and Fink, G. R. and Grefkes, C.},
title = {{N}etwork {C}onnectivity and {I}ndividual {R}esponses to
{B}rain {S}timulation in the {H}uman {M}otor {S}ystem},
journal = {Cerebral cortex},
volume = {24},
number = {7},
issn = {1460-2199},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {FZJ-2014-03441},
pages = {1697 - 1707},
year = {2014},
abstract = {The mechanisms driving cortical plasticity in response to
brain stimulation are still incompletely understood. We here
explored whether neural activity and connectivity in the
motor system relate to the magnitude of cortical plasticity
induced by repetitive transcranial magnetic stimulation
(rTMS). Twelve right-handed volunteers underwent functional
magnetic resonance imaging during rest and while performing
a simple hand motor task. Resting-state functional
connectivity, task-induced activation, and task-related
effective connectivity were assessed for a network of key
motor areas. We then investigated the effects of
intermittent theta-burst stimulation (iTBS) on motor-evoked
potentials (MEP) for up to 25 min after stimulation over
left primary motor cortex (M1) or parieto-occipital vertex
(for control). ITBS-induced increases in MEP amplitudes
correlated negatively with movement-related fMRI activity in
left M1. Control iTBS had no effect on M1 excitability.
Subjects with better response to M1-iTBS featured stronger
preinterventional effective connectivity between left
premotor areas and left M1. In contrast, resting-state
connectivity did not predict iTBS aftereffects.
Plasticity-related changes in M1 following brain stimulation
seem to depend not only on local factors but also on
interconnected brain regions. Predominantly
activity-dependent properties of the cortical motor system
are indicative of excitability changes following induction
of cortical plasticity with rTMS},
cin = {INM-3 / INM-1},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406 / I:(DE-Juel1)INM-1-20090406},
pnm = {333 - Pathophysiological Mechanisms of Neurological and
Psychiatric Diseases (POF2-333) / 89572 - (Dys-)function and
Plasticity (POF2-89572)},
pid = {G:(DE-HGF)POF2-333 / G:(DE-HGF)POF2-89572},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000338110900002},
pubmed = {pmid:23395849},
doi = {10.1093/cercor/bht023},
url = {https://juser.fz-juelich.de/record/154026},
}