左右手运动想象脑电模式的识别

想象左 (右 )手运动和实际做这个运动会以同样的方式改变大脑主要感觉运动区域的神经活动 ,引起脑电相关频率成分的特征变化 ,如事件相关同步 /去同步。及时有效地提取和识别这些与运动想象相关的脑电模式可以帮助严重瘫痪病人控制光标或辅助运动设备以替代其受损的运动功能 ,建立一种与外界交流沟通的新途径。本文介绍了左右手运动想象的实验方法 ,综述了辩别左右手运动想象脑电模式的算法 ,并对其发展前景做一展望。

Discrimination between Left and Right Hand Movement Imagery Event-releated EEG Pattern

Left and right hand movement imagery can modi ft y the neural activity in the primary sensorimotor areas in a very similar way as observable with a real executed movement, leading to the special changes of EEG components such as event-related desynchronization/synchronization(ERD/ERS). Q uick and correct classification of these event-related EEG pattern can be used to help patients with severe paralysis to move a cursor or orthosis to replace i mpaired motor function and provide a new communicatoion channel to environment. In this paper left and right hand movement imagery experiment method was introdu ced, some kinds of classification methods for event-related EEG pattern during motor imagery were reviewed and the prospect of classification methods was also put forward.