中文摘要：

脑机接口研究的目的就是在人脑和计算机或其他电子设备之间建立一种直接联系,使人们可以通过思维来直接控制计算机或外部设备。感觉刺激诱发的事件相关电位是基于脑电的脑机接口系统研究中备受关注的一种信号模式,按其刺激模式的不同又可分为视觉、听觉、体感等单一感觉通道刺激诱发的和跨感觉通道刺激诱发的事件相关电位。事件相关电位研究的发展表明：相对于单一感觉通道,跨感觉通道刺激诱发的事件相关电位具有波幅高、潜伏期短且含有高维度空间分布信息的特点,可弥补单一感觉诱发事件相关电位信息过少、不利识别的缺陷,从而提高信息转化速度和分类准确率,在脑机接口中具有更高的实用价值。

英文摘要：

Brain computer interface （BCI） provides a direct communication channel between human brain and computer or other electric equipments. It can enable human to control the computer or outer equipments only by using their mind. The event related potential （ERP） evoked by sensory stimulation has attracted more attentions as a signal mode used in the EEG-based BCI. According to the patterns of sensory stimulation, ERP can be divided into the single sensory channel stimulation evoked ERE which includes visual, auditory, and sensitive ERE and the cross sensory channel stimulation evoked ERP. Recent developments in the research of ERP showed that cross sensory ERP has higher amplitude, shorter latent period and higher dimensional spatial distribution information in contrast with single sensory ERP. Cross sensory ERP can overcome the recognition limitation caused by information lack of single sensory ERP, increase the information transferring rate and classification accuracy, and obtain higher application value in BCI.