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@ARTICLE{Herz:139805,
author = {Herz, D. M. and Florin, E. and Christensen, M. S. and Reck,
C. and Barbe, Michael and Tscheuschler, M. K. and
Tittgemeyer, M. and Siebner, H. R. and Timmermann, L.},
title = {{D}opamine {R}eplacement {M}odulates {O}scillatory
{C}oupling {B}etween {P}remotor and {M}otor {C}ortical
{A}reas in {P}arkinson's {D}isease.},
journal = {Cerebral cortex},
volume = {24},
number = {11},
issn = {1460-2199},
address = {Oxford},
publisher = {Oxford Univ. Press},
reportid = {FZJ-2013-05776},
pages = {2873-2883},
year = {2014},
abstract = {Efficient neural communication between premotor and motor
cortical areas is critical for manual motor control. Here,
we used high-density electroencephalography to study
cortical connectivity in patients with Parkinson's disease
(PD) and age-matched healthy controls while they performed
repetitive movements of the right index finger at maximal
repetition rate. Multiple source beamformer analysis and
dynamic causal modeling were used to assess oscillatory
coupling between the lateral premotor cortex (lPM),
supplementary motor area (SMA), and primary motor cortex
(M1) in the contralateral hemisphere. Elderly healthy
controls showed task-related modulation in connections from
lPM to SMA and M1, mainly within the γ-band (>30 Hz).
Nonmedicated PD patients also showed task-related γ-γ
coupling from lPM to M1, but γ coupling from lPM to SMA was
absent. Levodopa reinstated physiological γ-γ coupling
from lPM to SMA and significantly strengthened coupling in
the feedback connection from M1 to lPM expressed as β-β as
well as θ-β coupling. Enhancement in cross-frequency θ-β
coupling from M1 to lPM was correlated with levodopa-induced
improvement in motor function. The results show that PD is
associated with an altered neural communication between
premotor and motor cortical areas, which can be modulated by
dopamine replacement.},
cin = {INM-3},
ddc = {610},
cid = {I:(DE-Juel1)INM-3-20090406},
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:000344646200006},
doi = {10.1093/cercor/bht140},
url = {https://juser.fz-juelich.de/record/139805},
}