Motor and parietal cortex activity responses to mirror visual feedback in patients with subacute stroke: An EEG study.

IF 2 Q3 NEUROSCIENCES Clinical Neurophysiology Practice Pub Date : 2024-12-15 eCollection Date: 2025-01-01 DOI:10.1016/j.cnp.2024.12.004

Jinyang Zhuang, Xiyuan Lei, Xiaoli Guo, Li Ding, Jie Jia

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Abstract

Objective: To elucidate the immediate electrophysiological effects of mirror visual feedback (MVF) combined with or without touch task in subacute stroke.

Methods: Subacute stroke patients and healthy controls were recruited to participate in four grasping tasks (MVF or no MVF, combined with rubber ball or no ball) under electroencephalogram (EEG) monitoring. Event-related desynchronization (ERD) /event-related synchronization (ERS) and the lateralization index (LI) were utilized to observe the electrophysiological effects.

Results: MVF reduced ERD suppression in the contralateral primary motor cortex (M1) of stroke patients. This reduction was observed in the low mu band for the contralateral parietal cortex during pure MVF. The laterality effects in the low mu band under MVF was noted in M1 for stroke patients and in the parietal cortex for all participants.

Conclusions: MVF inhibits the excitability of the contralateral M1 for subacute stroke. MVF inhibit activities in the contralateral M1 and parietal cortex, and reestablished hemispheric balance in the low mu band.

Significance: MVF has an instantaneous effect on subacute stroke by inhibiting the excitability of the contralateral sensorimotor cortex. The attenuated ERD in the low mu band in contralateral M1 and parietal cortex may serve as biomarkers of MVF for stroke rehabilitation.

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亚急性中风患者的运动和顶叶皮层活动对镜像视觉反馈的反应：一项脑电图研究。

目的：探讨镜像视觉反馈（MVF）结合或不结合触觉任务在亚急性脑卒中中的即时电生理效应。方法：招募亚急性脑卒中患者和健康对照者，在脑电图监测下参与4种抓取任务（无抓球或无抓球、有抓球或无抓球）。采用事件相关去同步(ERD) /事件相关同步（ERS）和侧化指数（LI）观察电生理效应。结果：MVF降低脑卒中患者对侧初级运动皮质（M1） ERD抑制。在纯MVF期间，在对侧顶叶皮层的低mu波段观察到这种减少。在MVF下，脑卒中患者的M1和所有参与者的顶叶皮层均存在低mu带的侧性效应。结论：MVF抑制亚急性脑卒中对侧M1的兴奋性。MVF抑制对侧M1和顶叶皮层的活动，并在低mu波段重建半球平衡。意义：MVF通过抑制对侧感觉运动皮层的兴奋性，对亚急性卒中有瞬时作用。对侧M1和顶叶皮层低mu带ERD减弱可作为MVF的生物标志物。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Clinical Neurophysiology Practice NEUROSCIENCES-

CiteScore

3.90

自引率

0.00%

发文量

审稿时长

71 days

期刊介绍： Clinical Neurophysiology Practice (CNP) is a new Open Access journal that focuses on clinical practice issues in clinical neurophysiology including relevant new research, case reports or clinical series, normal values and didactic reviews. It is an official journal of the International Federation of Clinical Neurophysiology and complements Clinical Neurophysiology which focuses on innovative research in the specialty. It has a role in supporting established clinical practice, and an educational role for trainees, technicians and practitioners.