|
|
|
|
LEADER |
03510nam a2200361Ia 4500 |
001 |
10.3389-fnhum.2021.692304 |
008 |
220427s2021 CNT 000 0 und d |
020 |
|
|
|a 16625161 (ISSN)
|
245 |
1 |
0 |
|a Brain Functional Changes in Stroke Following Rehabilitation Using Brain-Computer Interface-Assisted Motor Imagery With and Without tDCS: A Pilot Study
|
260 |
|
0 |
|b Frontiers Media S.A.
|c 2021
|
856 |
|
|
|z View Fulltext in Publisher
|u https://doi.org/10.3389/fnhum.2021.692304
|
520 |
3 |
|
|a Brain-computer interface-assisted motor imagery (MI-BCI) or transcranial direct current stimulation (tDCS) has been proven effective in post-stroke motor function enhancement, yet whether the combination of MI-BCI and tDCS may further benefit the rehabilitation of motor functions remains unknown. This study investigated brain functional activity and connectivity changes after a 2 week MI-BCI and tDCS combined intervention in 19 chronic subcortical stroke patients. Patients were randomized into MI-BCI with tDCS group and MI-BCI only group who underwent 10 sessions of 20 min real or sham tDCS followed by 1 h MI-BCI training with robotic feedback. We derived amplitude of low-frequency fluctuation (ALFF), regional homogeneity (ReHo), and functional connectivity (FC) from resting-state functional magnetic resonance imaging (fMRI) data pre- and post-intervention. At baseline, stroke patients had lower ALFF in the ipsilesional somatomotor network (SMN), lower ReHo in the contralesional insula, and higher ALFF/Reho in the bilateral posterior default mode network (DMN) compared to age-matched healthy controls. After the intervention, the MI-BCI only group showed increased ALFF in contralesional SMN and decreased ALFF/Reho in the posterior DMN. In contrast, no post-intervention changes were detected in the MI-BCI + tDCS group. Furthermore, higher increases in ALFF/ReHo/FC measures were related to better motor function recovery (measured by the Fugl-Meyer Assessment scores) in the MI-BCI group while the opposite association was detected in the MI-BCI + tDCS group. Taken together, our findings suggest that brain functional re-normalization and network-specific compensation were found in the MI-BCI only group but not in the MI-BCI + tDCS group although both groups gained significant motor function improvement post-intervention with no group difference. MI-BCI and tDCS may exert differential or even opposing impact on brain functional reorganization during post-stroke motor rehabilitation; therefore, the integration of the two strategies requires further refinement to improve efficacy and effectiveness. © Copyright © 2021 Hu, Cheng, Ji, Chong, Lu, Huang, Ang, Phua, Chuang, Jiang, Chew, Guan and Zhou.
|
650 |
0 |
4 |
|a amplitude of low-frequency fluctuation
|
650 |
0 |
4 |
|a brain-computer interface-assisted motor imagery
|
650 |
0 |
4 |
|a functional connectivity
|
650 |
0 |
4 |
|a functional magnetic resonance imaging
|
650 |
0 |
4 |
|a regional homogeneity
|
650 |
0 |
4 |
|a stroke
|
650 |
0 |
4 |
|a transcranial direct current stimulation
|
700 |
1 |
|
|a Ang, K.K.
|e author
|
700 |
1 |
|
|a Cheng, H.-J.
|e author
|
700 |
1 |
|
|a Chew, E.
|e author
|
700 |
1 |
|
|a Chong, J.S.X.
|e author
|
700 |
1 |
|
|a Chuang, K.-H.
|e author
|
700 |
1 |
|
|a Guan, C.
|e author
|
700 |
1 |
|
|a Hu, M.
|e author
|
700 |
1 |
|
|a Huang, W.
|e author
|
700 |
1 |
|
|a Ji, F.
|e author
|
700 |
1 |
|
|a Jiang, X.
|e author
|
700 |
1 |
|
|a Lu, Z.
|e author
|
700 |
1 |
|
|a Phua, K.S.
|e author
|
700 |
1 |
|
|a Zhou, J.H.
|e author
|
773 |
|
|
|t Frontiers in Human Neuroscience
|