基于BCI-VR技术的新型上肢康复系统

A New Upper Extremity Rehabilitation System Based on BCI-VR Technology

针对上肢功能障碍患者,设计了一款基于虚拟现实(Virtual Reality,VR)技术与脑机接口(Brain-Computer Interface,BCI)技术的上肢康复系统。系统包括手掌抓握、手臂屈伸等多种训练模式,同时允许患者动态修改康复训练所处的虚拟环境。通过实时分析脑电信号,实现了在不同虚拟场景中进行在线康复训练的效果。为了降低虚拟现实系统的构建成本,使用WebVR技术快速构建虚拟环境,在不降低患者体验的基础上,大幅度减少开发成本,加快BCI-VR系统应用于临床医疗的进程。最后,通过对正常人群进行实验,左右手运动想象分类任务的平均分类准确率达到84.5%,验证了系统应用于医疗康复的可行性。

For patients with upper limb dysfunction,this paper designs an upper limb rehabilitation system based on Virtual Reality(VR)technology and Brain Computer Interface(BCI)technology.The system includes various training modes such as palm grasping,arm flexion and extension,and allows patients to dynamically modify the virtual environment of rehabilitation training.Through real-time analysis of EEG signals,the effect of online rehabilitation training in different virtual scenes is realized.In order to reduce the construction cost of virtual reality system,WebVR technology is used to quickly build virtual environment.On the basis of not reducing the patient experience,the development cost is greatly reduced,and the application process of BCI-VR system in clinical medicine is accelerated.Finally,through the experiment of normal people,the average classification accuracy of left and right hand motor imagery tasks reached 84.5%,which preliminarily verified the feasibility of the system in medical rehabilitation.