Chen Shugeng, Shu Xiaokang, Jia Jie, Wang Hewei, Ding Li, He Zhijie, Brauer Sandra, Zhu Xiangyang
159397Huashan Hospital, Fudan University, Shanghai, China.
12474Shanghai Jiaotong University, Shanghai, China.
Clin EEG Neurosci. 2022 May;53(3):238-247. doi: 10.1177/15500594211019917. Epub 2021 May 24.
Motor attempt (MA)/motor imagery (MI)-based brain-computer interface (BCI) is a newly developing rehabilitation technology for motor impairment. This study aims to explore the relationship between electroencephalography sensorimotor rhythm and motor impairment to provide reference for a BCI design. Twenty-eight stroke survivors with varying levels of motor dysfunction and spasticity status in the subacute or chronic stage were enrolled in the study to perform MA and MI tasks. Event-related desynchronization (ERD)/event-related synchronization (ERS) during and immediately after motor tasks were calculated. The Fugl-Meyer assessment scale (FMA) and the modified Ashworth scale (MAS) were applied to characterize upper-limb motor dysfunction and spasticity. There was a positive correlation between FMA total scores and ERS in the contralesional hemisphere in the MI task (< .05) and negative correlations between FMA total scores and ERD in both hemispheres in the MA task (< .05). Negative correlations were found between MAS scores of wrist flexors and ERD in the ipsilesional hemisphere (< .05) in the MA task. It suggests that motor dysfunction may be more correlated to ERS in the MI task and to ERD in the MA task while spasticity may be more correlated to ERD in the MA task.
基于运动尝试（MA）/运动想象（MI）的脑机接口（BCI）是一种新兴的针对运动障碍的康复技术。本研究旨在探索脑电图感觉运动节律与运动障碍之间的关系，为脑机接口设计提供参考。本研究纳入了28名处于亚急性或慢性阶段、具有不同程度运动功能障碍和痉挛状态的中风幸存者，让他们执行运动尝试和运动想象任务。计算运动任务期间及之后立即出现的事件相关去同步化（ERD）/事件相关同步化（ERS）。采用Fugl-Meyer评估量表（FMA）和改良Ashworth量表（MAS）来描述上肢运动功能障碍和痉挛情况。在运动想象任务中，FMA总分与对侧半球的ERS呈正相关（<0.05），在运动尝试任务中，FMA总分与双侧半球的ERD呈负相关（<0.05）。在运动尝试任务中，腕部屈肌的MAS评分与同侧半球的ERD呈负相关（<0.05）。这表明运动功能障碍在运动想象任务中可能与ERS的相关性更强，在运动尝试任务中与ERD的相关性更强，而痉挛在运动尝试任务中可能与ERD的相关性更强。
