PMID- 33075765 OWN - NLM STAT- MEDLINE DCOM- 20220307 LR - 20220307 IS - 1741-2552 (Electronic) IS - 1741-2552 (Linking) VI - 18 IP - 3 DP - 2021 Mar 8 TI - Modulating and restoring inter-muscular coordination in stroke patients using two-dimensional myoelectric computer interface: a cross-sectional and longitudinal study. LID - 10.1088/1741-2552/abc29a [doi] AB - Objective.Traditional training focuses on improving the motor function level of the limbs or joint levels, while inter-muscular coordination plays an important role in fine motor control and is often overlooked. The purpose of this study was to investigate the changes in inter-muscular coordination induced by the myoelectric-controlled interface (MCI) and the therapeutic effects of MCI-based inter-muscular coordination training on stroke patients.Approach. Eleven stroke patients, twenty young subjects and thirteen age-matched subjects were recruited to determine the dimensionality effect of MCI on inter-muscular coordination in the evaluation test. In addition, a stroke patient participated in a 20-day training session to test the therapeutic effects as a case study analysis in the training test. In these two tests, all subjects performed tracking tasks by flexing/extending their elbows according to the biofeedback from one-dimensional and two-dimensional (2D) MCI. Meanwhile, the electromyography and functional near infrared spectroscopy signals were recorded simultaneously to reflect the muscle and cortical activations.Main results. In all groups, as the MCI dimensionality increased, the antagonist activation decreased significantly, while the involvement in prefrontal cortex and primary motor cortex increased significantly. A significant reduction in muscle activation and an increase in cortical activation were found in the stroke patient, which might be due to a progressive normalization of patient after the training.Significance. These findings suggested that 2D MCI could be an effective tool to directly modulate inter-muscular coordination for stroke patients. Inter-muscular coordination training may restore the ability to coordinate agonist-antagonist muscle of stroke patient and this improvement may be accompanied by cortical reorganization. CI - (c) 2021 IOP Publishing Ltd. FAU - Jian, Chuyao AU - Jian C AD - Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510275, People's Republic of China. FAU - Deng, Linchuan AU - Deng L AD - Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510275, People's Republic of China. FAU - Liu, Huihua AU - Liu H AD - Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, People's Republic of China. FAU - Yan, Tiebin AU - Yan T AD - Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou 510120, People's Republic of China. FAU - Wang, Xianyun AU - Wang X AD - Guangdong Work Injury Rehabilitation Center, Guangzhou 510440, People's Republic of China. FAU - Song, Rong AU - Song R AUID- ORCID: 0000-0003-3662-116X AD - Key Laboratory of Sensing Technology and Biomedical Instrument of Guangdong Province, School of Biomedical Engineering, Sun Yat-sen University, Guangzhou 510275, People's Republic of China. AD - Shenzhen Research Institute of Sun Yat-sen University, Shenzhen 518057, People's Republic of China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210308 PL - England TA - J Neural Eng JT - Journal of neural engineering JID - 101217933 SB - IM MH - Computers MH - Cross-Sectional Studies MH - Electromyography MH - Humans MH - Longitudinal Studies MH - Muscle, Skeletal MH - *Stroke MH - *Stroke Rehabilitation/methods OTO - NOTNLM OT - EMG OT - cortical reorganization OT - fNIRS OT - inter-muscular coordination OT - stroke rehabilitation OT - upper limb EDAT- 2020/10/20 06:00 MHDA- 2022/03/08 06:00 CRDT- 2020/10/19 20:17 PHST- 2020/07/26 00:00 [received] PHST- 2020/10/19 00:00 [accepted] PHST- 2020/10/20 06:00 [pubmed] PHST- 2022/03/08 06:00 [medline] PHST- 2020/10/19 20:17 [entrez] AID - 10.1088/1741-2552/abc29a [doi] PST - epublish SO - J Neural Eng. 2021 Mar 8;18(3). doi: 10.1088/1741-2552/abc29a.