基于多个伪随机序列调制的视觉脑机接口研究

发布时间：2018-01-04 17:19

本文关键词：基于多个伪随机序列调制的视觉脑机接口研究　出处：《科学技术与工程》2017年06期 　论文类型：期刊论文

【摘要】：传统的基于编码调制的视觉脑机接口(BCI)使用一种编码及其移位来调制不同的视觉目标,限制了目标数的增加,因而限制了系统的信息传输率。基于两种不同类型的三个伪随机序列调制实现了一个48个刺激目标的BCI系统。采用两个不同的Golay码和一个近完美序列对目标进行调制,使得每个码的自相关特性和每个码之间的互相关特性都很好,大大提高了刺激目标数。通过模板匹配法对训练数据进行分类识别获得了很高的识别准确率,并和一类支持向量机方法进行了比较。选取了8个受试者进行了实验膜板匹配法的平均识别准确率达到93.49%,证明了这是一种提高刺激目标数的好方法。
[Abstract]:Based on the visual brain computer interface of the traditional modulation encoding (BCI) using a shift to visual target modulation encoding and different, is limited by the number of targets, thus limiting the information transmission rate of the system. The BCI system three pseudo-random sequence modulation of two different types of the realization of a 48 stimulus target based on the modulation of the target by two different Golay codes and a nearly perfect sequence, the cross-correlation between each code autocorrelation and each code is very good, can greatly improve the stimulation target number. Through the template matching classification to obtain very high recognition accuracy on the training data method, and one class support vector machine method. The average recognition selects 8 subjects of experimental film plate matching accuracy rate reached 93.49%, that this is a good way to improve the number of the target stimulus.

【作者单位】：南昌大学信息工程学院;
【基金】：国家自然科学基金(61365013,61663025)资助
【分类号】：R318;TN911.7
【正文快照】： 引用格式:龚华云,魏庆国,黄引.基于多个伪随机序列调制的视觉脑机接口研究[J].科学技术与工程,2017,17(6):88—91Gong Huayun,Wei Qingguo,Huang Yin.Study on visualbrain-computerinterfaces based on modulation of multiple pseudo-random sequences[J].Science Technolog

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