% IMPORTANT: The following is UTF-8 encoded. This means that in the presence
% of non-ASCII characters, it will not work with BibTeX 0.99 or older.
% Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or
% “biber”.
@ARTICLE{Nettekoven:202335,
author = {Nettekoven, Charlotte and Volz, Lukas J. and Leimbach,
Martha and Pool, Eva-Maria and Rehme, Anne and Eickhoff,
Simon and Fink, Gereon R. and Grefkes, Christian},
title = {{I}nter-individual variability in cortical excitability and
motor network connectivity following multiple blocks of
r{TMS}},
journal = {NeuroImage},
volume = {118},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2015-04599},
pages = {209 - 218},
year = {2015},
abstract = {The responsiveness to non-invasive neuromodulation
protocols shows high inter-individual variability, the
reasons of which remain poorly understood. We here tested
whether the response to intermittent theta-burst stimulation
(iTBS) – an effective repetitive transcranial magnetic
stimulation (rTMS) protocol for increasing cortical
excitability – depends on network properties of the
cortical motor system. We furthermore investigated whether
the responsiveness to iTBS is dose-dependent.To this end, we
used a sham-stimulation controlled, single-blinded
within-subject design testing for the relationship between
iTBS aftereffects and (i) motor-evoked potentials (MEPs) as
well as (ii) resting-state functional connectivity (rsFC) in
16 healthy subjects. In each session, three blocks of iTBS
were applied, separated by 15 min.We found that
non-responders (subjects not showing an MEP increase of ≥
$10\%$ after one iTBS block) featured stronger rsFC between
the stimulated primary motor cortex (M1) and premotor areas
before stimulation compared to responders. However, only the
group of responders showed increases in rsFC and MEPs, while
most non-responders remained close to baseline levels after
all three blocks of iTBS. Importantly, there was still a
large amount of variability in both groups.Our data suggest
that responsiveness to iTBS at the local level (i.e., M1
excitability) depends upon the pre-interventional network
connectivity of the stimulated region. Of note, increasing
iTBS dose did not turn non-responders into responders. The
finding that higher levels of pre-interventional
connectivity precluded a response to iTBS could reflect a
ceiling effect underlying non-responsiveness to iTBS at the
systems leve},
cin = {INM-3 / INM-1},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406 / I:(DE-Juel1)INM-1-20090406},
pnm = {572 - (Dys-)function and Plasticity (POF3-572) / HBP - The
Human Brain Project (604102)},
pid = {G:(DE-HGF)POF3-572 / G:(EU-Grant)604102},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000360630200021},
pubmed = {pmid:26052083},
doi = {10.1016/j.neuroimage.2015.06.004},
url = {https://juser.fz-juelich.de/record/202335},
}