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从高频稳态视觉唤起潜力 (SSVEP) 解码情绪.

Lu Nie1, Yixuan Ku2

  • 1Guangdong Provincial Key Laboratory of Brain Function and Disease, Center for Brain and Mental Well-being, Department of Psychology, Sun Yat-sen University, Guangzhou, China.

Journal of neuroscience methods
|July 8, 2023
PubMed
概括

研究人员从高频稳定状态视觉唤起潜力 (SSVEP) 信号中解码了情感信息,为情感大脑机器接口 (BMI) 开辟了新的途径. 这项研究利用无形的60赫兹闪刺激来减少参与者的疲劳.

关键词:
情感解码的解码方式大脑计算机接口 (BCI)大脑机器接口 (BMI) 是指大脑机器接口.情绪 情绪 情绪 情绪高频闪器高频闪器稳定状态视觉唤起潜力 (SSVEP)

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科学领域:

  • 神经科学是一个神经科学.
  • 大脑与计算机的接口
  • 认知科学 认知科学

背景情况:

  • 稳态视觉唤起潜力 (SSVEP) 是一个常见的脑机界面 (BMI) 工具.
  • 从SSVEP解码情感信息,特别是在高于关键闪频率的频率上,仍然未被充分探索.

研究的目的:

  • 研究从高频SSVEP信号中解码情感信息的可行性.
  • 探索使用不可见的60赫兹闪刺激用于情感解码的潜力.

主要方法:

  • 参与者看到视觉刺激 (正,中性,负) 在60赫兹,高于关键的闪频率.
  • 记录和分析SSVEP信号来解码情感和语义信息.
  • 刺激呈现了1秒,同时也分析了刺激前的信号.

主要成果:

  • 在刺激呈现期间,从60 Hz的SSVEP信号中成功解码了情感价值.
  • 从SSVEP信号中无法解码语义类别.
  • 无论是情感信息还是语义信息都无法从前刺激大脑活动中解码.

结论:

  • 情感信息可以从高频SSVEP信号中解码.
  • 这一发现支持了情感BMI系统的发展.
  • 使用高频,无形的刺激可以减少参与者的疲劳.