《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2021, Vol. 27 ›› Issue (3): 269-276.doi: 10.3969/j.issn.1006-9771.2021.03.004

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Factors Related to Curative Effect of Brain-computer Interface Training on Upper Limb Paralysis after Stroke

Qiong WU1,Yun-xiang GE2,Di MA1,Xue PANG1,Ying-yu CAO3,Yu PAN1(),Wei-bei DOU2,4()   

  1. 1.Department of Rehabilitation Medicine, Beijing Tsinghua Changgung Hospital, School of Clinical Medicine, Tsinghua University, Beijing 102218, China
    2.Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
    3.Beijing Institute of Petrochemical Technology, Beijing 102617, China
    4.Beijing National Research Center for Information Science and Technology, Beijing 100084, China
  • Received:2020-06-18 Revised:2020-08-03 Published:2021-03-25 Online:2021-04-02
  • Contact: Yu PAN,Wei-bei DOU E-mail:py10335@163.com;douwb@tsinghua.edu.cn
  • Supported by:
    Beijing Science and Technology Plan(Z181100009218003);Beijing Natural Science Foundation(L182028);Opto-Mechatronic Equipment Technology Beijing Area Major Laboratory, Beijing Institute of Petrochemical Technology(BTPT-OMET-OF-2020-1)

Abstract: Objective

To explore the factors affecting curative effect of motor imagery brain-computer interface (MI-BCI) training on upper limb paralysis for subacute stroke patients.

Methods

From January, 2018 to July, 2019, 23 inpatients with post-stroke upper limb paralysis accepting MI-BCI training were reviewed. The gender, age, course of disease, aphasia, location and nature of lesion, history of Botulinum toxin, hemisphere injured and modified Ashworth Scale (MAS) score of affected fingers were recorded, and they were assessed with Fugl-Meyer Assessment-Upper Extremities (FMA-UE) before and four weeks after MI-BCI training. According to improvement of FMA-UE wrist and hand scores (≥ 2), the patients were divided into effective group (n = 11) and inefficacy group (n = 12).

Results

The MAS scores before MI-BCI training (t = 2.677, P < 0.05) and history of botulinum toxin (Z = 0.000, P < 0.05) were more in the inefficacy group than in the efficacy group. FMA-UE scores (total and dimensions) after training were correlated to their baseline levels (r > 0.831, P < 0.01), FMA-UE total scores (Eta = 0.453, P < 0.05) and upper arms scores (Eta = 0.506, P < 0.05) were correlated to aphasia, FMA-UE scores of hands were correlated with MAS (r = -0.521, P < 0.05).

Conclusion

Poor baseline motor function, spasticity and complication with aphasia were the factors unfavorable to MI-BCI training for subacute stroke patients with upper limb paralysis.

Key words: stroke, brain-computer interface, upper limb, motor function, rehabilitation, relative factors

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