α波和运动想象的混合范式脑-机接口系统  

Hybrid brain-computer interface system based on α wave and motor imagery

作　　者：赵丽[1] 董燕丽[1] 郭旭宏[1] 

机构地区：[1]天津市信息传感与智能控制重点实验室天津职业技术师范大学,天津300222

出　　处：《电子测量与仪器学报》2014年第6期625-629,共5页Journal of Electronic Measurement and Instrumentation

摘　　要：提出将α波和运动想象2种范式以串行的方式相结合控制的脑-机接口系统,该系统利用α波的阻断现象控制状态选择,选择成功后发出提示音,被试听到提示音后,通过左右手运动想象来完成多个任务。通过这样的混合范式有效的实现了较少种类的脑电信号对外部设备的多任务控制。实验结果表明,5名被试都能顺利完成外部设备的多任务控制,平均正确率为77%,最高正确率可达90%。本系统实现了混合范式下的脑电信号对外部设备的多任务控制,为进一步开发复杂的混合范式的脑-机接口系统奠定基础。The system controlled the brain-computer interface by combining α wave with motor imagery paradigm sequentially.It can choose different states by using α wave blocking phenomenon.The system beeped when it chose the states successfully.The subjects can finish multi-task control through the left or right hand motor imagery after hearing the tone.The system achieved fewer types of EEG signals to control multi-task of the external devices by such a hybrid paradigm.The experiment results showed that 5 subjects could control external devices to complete the multi-task successfully.The average accuracy was 77％ while the highest accuracy rate reached to 90％.The system achieved multi-task control on external devices based on hybrid paradigm EEG,and did preparation for further development of complex hybrid paradigm brain-computer interface system.

关 键 词：混合范式 Α波 运动想象 脑-机接口 

分 类 号：R318[医药卫生—生物医学工程] TN911.7[医药卫生—基础医学]