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@ARTICLE{Popovych:818220,
author = {Popovych, Svitlana and Rosjat, Nils and Toth, T. I. and
Wang, Bin and Liu, Liqing and Abdollahi, Rouhollah and
Viswanathan, Shivakumar and Grefkes, Christian and Fink,
Gereon Rudolf and Daun, Silvia},
title = {{M}ovement-related phase locking in the delta–theta
frequency band},
journal = {NeuroImage},
volume = {139},
issn = {1053-8119},
address = {Orlando, Fla.},
publisher = {Academic Press},
reportid = {FZJ-2016-04705},
pages = {439-449},
year = {2016},
abstract = {Movements result from a complex interplay of multiple brain
regions. These regions are assembled into distinct
functional networks depending on the specific properties of
the action. However, the nature and details of the dynamics
of this complex assembly process are unknown. In this study,
we sought to identify key markers of the neural processes
underlying the preparation and execution of motor actions
that always occur irrespective of differences in movement
initiation, hence the specific neural processes and
functional networks involved. To this end, EEG activity was
continuously recorded from 18 right-handed healthy
participants while they performed a simple motor task
consisting of button presses with the left or right index
finger. The movement was performed either in response to a
visual cue or at a self-chosen, i.e., non-cued point in
time. Despite these substantial differences in movement
initiation, dynamic properties of the EEG signals common to
both conditions could be identified using time–frequency
and phase locking analysis of the EEG data. In both
conditions, a significant phase locking effect was observed
that started prior to the movement onset in the δ–θ
frequency band (2–7 Hz), and that was strongest at the
electrodes nearest to the contralateral motor region (M1).
This phase locking effect did not have a counterpart in the
corresponding power spectra (i.e., amplitudes), or in the
event-related potentials. Our finding suggests that phase
locking in the δ–θ frequency band is a ubiquitous
movement-related signal independent of how the actual
movement has been initiated. We therefore suggest that
phase-locked neural oscillations in the motor cortex are a
prerequisite for the preparation and execution of motor
actions},
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},
UT = {WOS:000381583500042},
pubmed = {pmid:27374370},
doi = {10.1016/j.neuroimage.2016.06.052},
url = {https://juser.fz-juelich.de/record/818220},
}