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Optimized inter-stimulus interval (ISI) and content design for evoking better visual evoked potential (VEP) in brain-computer interface applications

机译:优化的刺激间隔(ISI)和内容设计,以在脑机接口应用中激发更好的视觉诱发电位(VEP)

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摘要

Brain-computer interfaces have been adopting visual evoked potential (VEP) signals to evaluate real-time cognitive responses, which have been shown to differ depending on the system's panel design and inter-stimulus interval (ISI). The objective of this study was to determine the optimal ISI and display contents for improved VEP signals. The panel contents consisted of six Korean texts or symbols from a television remote controller, and three levels of ISI were used. Subjects concentrated on a target stimulus while the panel randomly flashed different texts or symbols. Six local areas were measured by electroencephalogram based on the Extended International 10-20 system. P3 and N1 amplitudes and latencies were analyzed to determine the optimal combination of panel contents and ISI. Text-based panels were found to produce superior P3 and N1 responses compared with symbol-based panels. The ISI of 300 ms induced the best ERP responses for both text and symbol panels.
机译:脑机接口已经采用视觉诱发电位(VEP)信号来评估实时认知反应,这已显示出取决于系统的面板设计和刺激间间隔(ISI)。这项研究的目的是确定最佳ISI和显示内容以改善VEP信号。面板内容由来自电视遥控器的六种韩文文字或符号组成,并使用了三级ISI。受试者专注于目标刺激,而面板随机闪烁不同的文本或符号。根据扩展国际10-20系统的脑电图测量了六个局部区域。分析P3和N1的幅度和延迟,以确定面板内容和ISI的最佳组合。与基于符号的面板相比,基于文本的面板可产生更好的P3和N1响应。 300毫秒的ISI可以为文本和符号面板带来最佳的ERP响应。

著录项

  • 来源
    《Brain-Computer Interfaces》 |2016年第4期|186-196|共11页
  • 作者单位

    Emotion Contents Technology Research Center, Sangmyung University, Hongji-dong, Jongno-gu, Seoul, Korea;

    Department of Media Software, Sangmyung University, Hongji-dong, Jongno-gu, Seoul, Korea;

    Emotion Contents Technology Research Center, Sangmyung University, Hongji-dong, Jongno-gu, Seoul, Korea;

    Emotion Contents Technology Research Center, Sangmyung University, Hongji-dong, Jongno-gu, Seoul, Korea;

    Research Associate, VR/AR center, Korea Electronics Technology Institute Digital Innovation Center;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Screen design; inter-stimulation interval; panel contents; P3; N1;

    机译:屏幕设计;相互刺激间隔面板内容;P3;N1;

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