文献类型：期刊文献

英文题名：An adaptive P300-based control system

作者：Jin, Jing[1,2];Allison, Brendan Z.[2];Sellers, Eric W.[3];Brunner, Clemens[2];Horki, Petar[2];Wang, Xingyu[1];Neuper, Christa[2,4]

机构：[1]E China Univ Sci & Technol, Minist Educ, Key Lab Adv Control & Optimizat Chem Proc, Minist Educ, Shanghai 200237, Peoples R China;[2]Graz Univ Technol, Inst Knowledge Discovery, Lab Brain Comp Interfaces, A-8010 Graz, Austria;[3]E Tennessee State Univ, Dept Psychol, Brain Comp Interface Lab, Johnson City, TN 37614 USA;[4]Graz Univ, Dept Psychol, A-8010 Graz, Austria

年份：2011

卷号：8

期号：3

外文期刊名：JOURNAL OF NEURAL ENGINEERING

收录：;EI(收录号：20112314037358);WOS:【SSCI(收录号:WOS:000291035100018)，SCI-EXPANDED(收录号:WOS:000291035100018)】；

语种：英文

外文关键词：Interfaces (computer) - Adaptive control systems

摘要：An adaptive P300 brain-computer interface (BCI) using a 12 x 7 matrix explored new paradigms to improve bit rate and accuracy. During online use, the system adaptively selects the number of flashes to average. Five different flash patterns were tested. The 19-flash paradigm represents the typical row/column presentation (i.e. 12 columns and 7 rows). The 9- and 14-flash A and B paradigms present all items of the 12 x 7 matrix three times using either 9 or 14 flashes (instead of 19), decreasing the amount of time to present stimuli. Compared to 9-flash A, 9-flash B decreased the likelihood that neighboring items would flash when the target was not flashing, thereby reducing the interference from items adjacent to targets. 14-flash A also reduced the adjacent item interference and 14-flash B additionally eliminated successive (double) flashes of the same item. Results showed that the accuracy and bit rate of the adaptive system were higher than those of the non-adaptive system. In addition, 9- and 14-flash B produced significantly higher performance than their respective A conditions. The results also show the trend that the 14-flash B paradigm was better than the 19-flash pattern for naive users.