在沉浸式VR-BCI康复期间,基于EEG的运动恢复预测器
Madalena Valente1, Diogo Branco2,3, Sergi Bermúdez I Badia2,3
1Bioengineering Department, Institute for Systems and Robotics - Lisboa, Instituto Superior Técnico, Universidade de Lisboa, Lisboa, Portugal.
Scientific reports
|February 9, 2026
概括
由事件相关脱同步 (ERD) 测量的基线脑活动模式可以预测脑电脑接口 (BCI) 和虚拟现实 (VR) 康复中风患者的运动恢复. 在ERD的短期变化没有显示预测价值.
科学领域:
- 神经科学是一个神经科学.
- 康复医学 康复医学 康复医学
- 生物医学工程 生物医学工程
背景情况:
- 脑卒中后的运动障碍会导致长期严重的残疾和降低生活质量.
- 脑计算机接口 (BCI) 系统与运动图像 (MI) 和虚拟现实 (VR) 结合,显示了增强神经可塑性和改善患者参与的潜力.
- 确定可靠的基于脑电图 (EEG) 的生物标志物来预测中风恢复至关重要,但仍然具有挑战性.
研究的目的:
- 调查MI-VR训练期间与事件相关的脱同步 (ERD) 动态和慢性中风幸存者的运动恢复之间的关系.
- 为了确定基线ERD特征或ERD随时间变化是否预测了运动功能的改善.
主要方法:
- 14名患有慢性中风的参与者接受了为期4周的VR-BCI干预,其中9名在实验组,5名在对照组.
- 收集了EEG数据以评估运动图像任务期间的ERD.
- 使用线性混合效应模型和两阶段回归来分析ERD调制及其与Fugl-Meyer评估 (FMA) 评分的相关性.
主要成果:
- 与非中风对照队伍相比,中风参与者表现出明显减少的ERD.
- 在中风组内的训练课程中没有观察到ERD的显著变化.
- 基线ERD振幅是运动改善 (FMA增长) 的重要预测指标,而ERD进展则不是.
- 在缺血性中风患者中发现了双侧ERD的补偿趋势.
结论:
- 基线ERD振幅似乎是慢性中风中运动恢复的更强大的预后生物标志物,而不是短期ERD动态.
- 这些发现支持开发个性化VR-BCI康复策略,以个体患者的生物标志物量身定制.
- 进一步的研究可以改进EEG生物标志物的使用,以优化中风康复结果.
相关概念视频
01:24Muscle Recovery and Fatigue
4.3K
Muscle fatigue refers to the decline in a muscle's ability to maintain the force of contraction after prolonged activity. It primarily stems from changes within muscle fibers. Even before experiencing muscle fatigue, one may feel tired and have the urge to stop the activity. This response, known as central fatigue, occurs due to changes in the central nervous system, namely the brain and spinal cord. While there is no single mechanism that induces fatigue, it may serve as a protective...
4.3K
00:46Motor Units
62.0K
A motor unit consists of two main components: a single efferent motor neuron (i.e., a neuron that carries impulses away from the central nervous system) and all of the muscle fibers it innervates. The motor neuron may innervate multiple muscle fibers, which are single cells, but only one motor neuron innervates a single muscle fiber.
62.0K
01:13Motor Units
8.3K
The motor unit is a fundamental component of the neuromuscular system and plays a crucial role in coordinating muscle contractions. It consists of a somatic motor neuron, which connects and controls multiple skeletal muscle fibers, forming a single functional segment. The axon of the motor neuron branches out and establishes synaptic connections known as neuromuscular junctions with individual muscle fibers within the motor unit.
Motor units come in different sizes, with smaller units...
Motor units come in different sizes, with smaller units...
8.3K
01:20Motor Unit Stimulation
3.9K
When the neuron of a motor unit fires an action potential, it triggers a series of events, leading to a twitch contraction in the muscle fibers. The process of excitation-contraction coupling is crucial in relaying the action potential to the muscle fibers.
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
The latent period of contraction marks the onset of excitation-contraction coupling, when the action potential propagates across the sarcolemma, preparing the muscle fibers for contraction. As the fibers enter the contraction phase, the...
3.9K
01:18Hierarchy of Motor Control
6.3K
The hierarchy of motor control refers to the different levels of organization and processing involved in controlling movement in the body. These levels range from higher cortical areas involved in planning and decision-making to lower spinal cord reflexes that respond automatically to external stimuli.
6.3K
01:11Direct Motor Pathways
4.6K
The direct motor pathways, also known as the pyramidal tracts, are a group of neural pathways that originate in the brain and descend through the spinal cord. They control the voluntary movement of the body. There are two major direct motor pathways: the corticospinal and the corticobulbar tracts.
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and...
The corticospinal tract is responsible for the voluntary movement of the limbs and trunk. It originates in the cerebral cortex of the brain and descends through the cerebrum's internal capsule and...
4.6K