EEG based analysis of lower limb exercise for neurorehabilitation according to the linkage between motor execution and visual feedback in immersive VR: A feasibility study with healthy adults
EEG based analysis of lower limb exercise for neurorehabilitation according to the linkage between motor execution and visual feedback in immersive VR: A feasibility study with healthy adults
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根据沉浸式 VR 中运动执行和视觉反馈之间的联系，基于脑电图对神经康复下肢运动进行分析：健康成人的可行性研究
DOI：
10.1109/sii52469.2022.9708744
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发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Iwata Hiroyasu
中科院分区：
文献类型：
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作者：
Yang Xinyi;Hong Jing-Chen;Yasuda Kazuhiro;Ono Yumie;Iwata Hiroyasu
中风会因脑损伤而导致身体功能障碍，从而导致偏瘫等后遗症。到目前为止，我们开发了下肢康复系统，帮助患者在神经康复中利用大脑的可塑性来恢复腿部功能。系统中的视觉反馈（FB）与下肢机械辅助装置一起，与运动执行相关联，形成与运动执行及其想象力相匹配的FB学习模型。这项针对健康受试者的可行性研究旨在将知识应用于未来的康复计划。同时，可行性研究旨在研究链接视觉FB对运动执行想象力的影响，并进一步阐明视觉FB条件的有效设计，重点关注视觉FB和运动执行之间的相似性。使用该系统进行了三种不同条件下的实验：（i）没有视觉FB，（ii）具有视觉FB和FB中的运动与运动执行不同，（iii）具有视觉FB和FB中的运动更接近于运动执行。脑电图（EEG）作为评估运动执行想象力的指标，是运动回忆过程中脑电图值的减少 - 主要使用事件相关去同步（ERD）。根据结果，通过比较（i）和（ii），（ii）中显着更大的ERD证实视觉FB有助于获得运动执行的想象力（p = 0.028）。此外，在(ii)和(iii)之间，β带中的ERD在(iii)中显着更大(p = 0.028)，但α带中的ERD没有显着差异(p = 0.600)，可能需要进一步确认。总之，本研究验证了视觉FB与运动执行之间的联系，这有助于获得想象力，并可能与大脑恢复有关。
Stroke causes physical dysfunction due to brain damage, leading to aftereffects, such as hemiplegia. Until now, a lower limb rehabilitation system was developed by us to help patients to restore leg function owing to brain plasticity in neurorehabilitation. Visual Feedback (FB) in the system, together with a mechanical assistant for lower limb, linked to the motor execution is presented to form a FB learning model matching the motor execution and its imagination. This feasibility study on the healthy subjects aims to apply the knowledge to rehabilitation program in the future. Meanwhile, the feasibility study aims to investigate the effect of linked visual FB on the imagination of motor execution and furthermore, to clarify an effective design of visual FB conditions focusing on the similarity between visual FB and motor execution. The experiments under three different conditions were conducted using the system: (i) no visual FB, (ii) with visual FB and motion in the FB different from motor execution, (iii) with visual FB and motion in the FB closer to motor execution. Electroencephalogram (EEG) was performed as an indicator to evaluate the imagination of motor execution, being the reduction of EEG values during motion recall - Event Related Desynchronization (ERD) mainly used. According to the results, by comparing (i) and (ii), significantly greater ERD in (ii) verified that visual FB helps acquire the imagination of motor execution (p = 0.028). Moreover, between (ii) and (iii), ERD in β-band were significantly greater in (iii) (p = 0.028), but no significant difference showed for ERD in α-band (p = 0.600) that further confirmation might be needed. In conclusion, the linkage between visual FB and motor execution was verified in this study, which helps to acquire the imagination and may be related with brain recovery.