Modulating Brain Connectivity by Simultaneous Dual- Mode Stimulation over Bilateral Primary Motor Cortices in Subacute Stroke Patients

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Repetitive transcranial magnetic stimulation (rTMS) or transcranial direct current stimulation (tDCS) has been used for the modulation of stroke patients' motor function. Recently, more challenging approaches have been studied. In this study, simultaneous stimulation using both rTMS and tDCS (dual-mode stimulation) over bilateral primary motor cortices (M1s) was investigated to compare its modulatory effects with single rTMS stimulation over the ipsilesional M1 in subacute stroke patients. Twenty-four patients participated; 12 participants were assigned to the dual-mode stimulation group while the other 12 participants were assigned to the rTMS-only group. We assessed each patient's motor function using the Fugl-Meyer assessment score and acquired their resting-state fMRI data at two times: prior to stimulation and 2 months after stimulation. Twelve healthy subjects were also recruited as the control group. The interhemispheric connectivity of the contralesional M1, interhemispheric connectivity between bilateral hemispheres, and global efficiency of the motor network noticeably increased in the dual-mode stimulation group compared to the rTMS-only group. Contrary to the dual-mode stimulation group, there was no significant change in the rTMS-only group. These data suggested that simultaneous dual-mode stimulation contributed to the recovery of interhemispheric interaction than rTMS only in subacute stroke patients.
Publisher
HINDAWI LTD
Issue Date
2018-02
Language
English
Article Type
Article
Keywords

TRANSCRANIAL MAGNETIC STIMULATION; STATE FUNCTIONAL CONNECTIVITY; PARETIC HAND; SKILL ACQUISITION; SMALL-WORLD; CORTEX; RECOVERY; NETWORK; EXCITABILITY; PERFORMANCE

Citation

NEURAL PLASTICITY, v.2018, no.1458061, pp.1 - 9

ISSN
2090-5904
DOI
10.1155/2018/1458061
URI
http://hdl.handle.net/10203/240927
Appears in Collection
EE-Journal Papers(저널논문)
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