Related Experiment Video
Updated: Jan 11, 2026
Author Spotlight: Advancing Upper Limb Rehabilitation in Patients with Right Hemisphere Damage Using Assisted Active Exercise
Published on: February 9, 2024
Unveiling the upper-limb functional recovery mechanisms in stroke patients using brain-machine interfaces: a
Juan Zhang1,2, Zhi-Ying Zhang1,3, Yin-Long Wang1,4
1Department of Physical Medicine and Rehabilitation, The Fourth Affiliated Hospital of Soochow University (Dushu Lake Hospital Affiliated to Soochow University), Suzhou, 215021, Jiangsu province, China.
Brain-computer interface (BCI) therapy, combined with rehabilitation, significantly improved upper limb function and daily activities in stroke patients. This approach also enhanced brain activity in key motor areas and network efficiency.
Area of Science:
- Neuroscience
- Rehabilitation Medicine
- Biomedical Engineering
Background:
- Upper limb dysfunction is a common challenge for chronic stroke survivors.
- Brain-computer interface (BCI) technology offers a novel approach for motor rehabilitation in stroke patients.
- Traditional BCI applications have limitations in monitoring brain function during rehabilitation.
Purpose of the Study:
- To investigate the efficacy of BCI combined with conventional rehabilitation for upper limb dysfunction in stroke patients.
- To assess changes in brain cortex activation patterns using functional near-infrared spectroscopy (fNIRS) before and after BCI intervention.
- To evaluate the impact of BCI on motor function and activities of daily living.
Main Methods:
- A randomized controlled trial involving 30 chronic stroke patients with upper limb dysfunction.
- Participants were assigned to either a treatment group (BCI + rehabilitation) or a control group (rehabilitation only).
- fNIRS was used to measure cortical activation (oxygenated hemoglobin) in specific brain regions (PMC, SMA, SMC) at baseline, 2 weeks, and 4 weeks. Functional outcomes were assessed using the Fugl-Meyer assessment (FM) and modified Barthel index (MBI).
Main Results:
- The BCI treatment group showed significantly greater improvements in both FM and MBI scores compared to the control group.
- fNIRS data indicated increased oxygenated hemoglobin levels in the primary motor cortex (PMC) and supplementary motor area (SMA) in the treatment group.
- The treatment group exhibited enhanced PMC activation and higher brain network efficiency, which positively correlated with functional gains.
Conclusions:
- BCI treatment, when combined with conventional rehabilitation, is effective in improving motor function and daily living activities in stroke patients with upper limb dysfunction.
- BCI intervention promotes cortical activation in relevant motor areas and enhances brain network efficiency.
- fNIRS is a valuable tool for monitoring neuroplasticity and treatment effects in BCI-based stroke rehabilitation.
