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@ARTICLE{Patel:859850,
author = {Patel, Harshal Jayeshkumar and Romanzetti, Sandro and
Pellicano, Antonello and Nitsche, Michael A. and Reetz,
Kathrin and Binkofski, Ferdinand},
title = {{P}roton {M}agnetic {R}esonance {S}pectroscopy of the motor
cortex reveals long term {GABA} change following anodal
{T}ranscranial {D}irect {C}urrent {S}timulation},
journal = {Scientific reports},
volume = {9},
number = {1},
issn = {2045-2322},
address = {[London]},
publisher = {Macmillan Publishers Limited, part of Springer Nature},
reportid = {FZJ-2019-00672},
pages = {2807},
year = {2019},
abstract = {Anodal transcranial direct current stimulation (tDCS) over
the primary motor cortex (M1) has been reported to increase
the firing rates of neurons and to modulate the
gamma-aminobutyric acid (GABA) concentration. To date,
knowledge about the nature and duration of these tDCS
induced effects is incomplete. We aimed to investigate
long-term effects of anodal tDCS over M1 on GABA dynamics in
humans. Repeated magnetic resonance spectroscopy (MRS) was
employed to measure relative GABA concentration in M1 for
approximately 64 minutes after stimulation. The study was
performed on 32 healthy subjects. Either anodal or sham tDCS
were applied for 10 minutes with the active electrode over
the left M1 and the reference electrode over the right
supra-orbital region. Pre and post-tDCS MRS scans were
performed to acquire GABA-edited spectra using 3 T Prisma
Siemens scanner. GABA signals showed no change over time in
the sham tDCS group, whereas anodal tDCS resulted in a
significant early decrease within 25 minutes after tDCS
and then significant late decrease after 66 minutes which
continued until the last test measurements. The late changes
in GABA concentration might be related to long-term
plasticity mechanism. These results contribute to a better
understanding of the neurochemical mechanism underlying
long-term cortical plasticity following anodal tDCS.},
cin = {INM-4 / JARA-BRAIN},
ddc = {600},
cid = {I:(DE-Juel1)INM-4-20090406 / $I:(DE-82)080010_20140620$},
pnm = {573 - Neuroimaging (POF3-573)},
pid = {G:(DE-HGF)POF3-573},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:30808895},
UT = {WOS:000459698900068},
doi = {10.1038/s41598-019-39262-7},
url = {https://juser.fz-juelich.de/record/859850},
}