基于脑电的脑机接口刺激系统的研制

脑机接口(BCI)是在人脑和外界之间建立不依赖于常规大脑信息输出通路的一种通讯系统.脑机接口刺激系统的作用是通过对受试者施加一定的外界刺激来诱发具有一定特征的脑电波.本研究基于多种刺激模式的脑机接口视觉刺激器,采用计算机编程,在计算机屏幕上实现了基于VEP、P300、想象运动的3类刺激模式.该系统能够通过特定的刺激从而有效地诱发出可识别特征的脑电信号,采用XML技术使得该刺激系统具有较强的可扩展性,可以满足脑机接口实验的需要.

Stimulation System for EEG-based Brain-computer Interface

Brain computer Interface(BCI) is a communication system in which messages that a user wishes to convey pass not through the brain's normal output pathways.Stimulation system for BCI is to put some external stimulation to induce certain EEG.In this article a visual stimulation system with a number of stimulating patterns for BCI realized is described,and three stimulation patterns,for VEP,P300,and motor imagery on the computer screen realized is described by computer programming.This system can induce identifiable EEG signals effectively by certain stimulation,and makes use of XML technology so that the system has strong scalability,and meets the needs of BCI experiments.