Correlation between the ERD in grasp/open tasks of BCIs and hand function of stroke patients: a cross-sectional study

BioMedical Engineering OnLine

Research

Jianghong Fu¹  ZeWu Jiang¹  Shugeng Chen¹  Jie Jia²  Xiaokang Shu³ 

[1] Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, 12 Mid-Wulumuqi Road, Jing’an District, 200040, Shanghai, China;Department of Rehabilitation Medicine, Huashan Hospital, Fudan University, 12 Mid-Wulumuqi Road, Jing’an District, 200040, Shanghai, China;National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China;National Center for Neurological Disorders, Shanghai, China;School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China;

关键词: Grasp;    Open;    Brain–computer interfaces;    Stroke;    Motor task;   

DOI  :  10.1186/s12938-023-01091-1

 received in 2022-10-04, accepted in 2023-03-02,  发布年份 2023

来源: Springer

【 摘 要 】

Background and aimsBrain-computer interfaces (BCIs) are emerging as a promising tool for upper limb recovery after stroke, and motor tasks are an essential part of BCIs for patient training and control of rehabilitative/assistive BCIs. However, the correlation between brain activation with different levels of motor impairment and motor tasks in BCIs is still not so clear. Thus, we aim to compare the brain activation of different levels of motor impairment in performing the hand grasping and opening tasks in BCIs.MethodsWe instructed stroke patients to perform motor attempts (MA) to grasp and open the affected hand for 30 trials, respectively. During this period, they underwent EEG acquisition and BCIs accuracy recordings. They also received detailed history records and behavioral scale assessments (the Fugl-Meyer assessment of upper limb, FMA-UE).ResultsThe FMA-UE was negatively correlated with the event-related desynchronization (ERD) of the affected hemisphere during open MA (R = − 0.423, P = 0.009) but not with grasp MA (R = − 0.058, P = 0.733). Then we divided the stroke patients into group 1 (Brunnstrom recovery stages between I to II, n = 19) and group 2 (Brunnstrom recovery stages between III to VI, n = 23). No difference during the grasping task (t = 0.091, P = 0.928), but a significant difference during the open task (t = 2.156, P = 0.037) was found between the two groups on the affected hemisphere. No significant difference was found in the unaffected hemisphere.ConclusionsThe study indicated that brain activation is positively correlated with the hand function of stroke in open-hand tasks. In the grasping task, the patients in the different groups have a similar brain response, while in the open task, mildly injured patients have more brain activation in open the hand than the poor hand function patients.

【 授权许可】

CC BY   
© The Author(s) 2023. corrected publication 2023

【 图 表 】

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