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首页> 外文期刊>The European Journal of Neuroscience >Understanding human individuation of unfamiliar faces with oddball fast periodic visual stimulation and electroencephalography
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Understanding human individuation of unfamiliar faces with oddball fast periodic visual stimulation and electroencephalography

机译：了解人类个性化陌生面孔的陌生面孔，快速定期视觉刺激和脑电图

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To investigate face individuation (FI), a critical brain function in the human species, an oddball fast periodic visual stimulation (FPVS) approach was recently introduced (Liu-Shuang et al.,Neuropsychologia, 2014, 52, 57). In this paradigm, an image of an unfamiliar "base" facial identity is repeated at a rapid rateF(e.g., 6 Hz) and different unfamiliar "oddball" facial identities are inserted everynth item, at aF/nrate (e.g., every 5th item, 1.2 Hz). This stimulation elicits FI responses atF/nand its harmonics (2F/n, 3F/n, etc.), reflecting neural discrimination between oddball versus base facial identities, which is quantified in the frequency domain of the electroencephalogram (EEG). This paradigm, used in 20 published studies, demonstrates substantial advantages for measuring FI in terms of validity, objectivity, reliability, and sensitivity. Human intracerebral recordings suggest that this FI response originates from neural populations in the lateral inferior occipital and fusiform gyri, with a right hemispheric dominance consistent with the localization of brain lesions specifically affecting facial identity recognition (prosopagnosia). Here, we summarize the contributions of the oddball FPVS framework toward understanding FI, including its (a)typical development, with early studies supporting the application of this technique to clinical testing (e.g., autism spectrum disorder). This review also includes an in-depth analysis of the paradigm's methodology, with guidelines for designing future studies. A large-scale group analysis compiling data across 130 observers provides insights into the oddball FPVS FI response properties. Overall, we recommend the oddball FPVS paradigm as an alternative approach to behavioral or traditional event-related potential EEG measures of face individuation.
机译：为了研究人脸个性化（FI）这一人类物种的关键脑功能，最近引入了一种奇怪的快速周期性视觉刺激（FPVS）方法（刘爽等，神经心理学，2014,52,57）。在这个范例中，一个陌生的“基本”面部身份的图像以快速的速率（例如，6赫兹）重复，不同的陌生“古怪”面部身份在aF/nrate（例如，每5个项目，1.2赫兹）的每一个项目中插入。这种刺激会引发FI反应atF/n及其谐波（2F/n、3F/n等），反映出在脑电图（EEG）频域中量化的古怪与基本面部身份之间的神经辨别。这一范式在20项已发表的研究中得到了应用，证明了在有效性、客观性、可靠性和敏感性方面测量FI的巨大优势。人类脑内记录表明，这种FI反应起源于枕下外侧回和梭形回的神经群，右半球占优势，与大脑损伤的定位一致，特别影响面部身份识别（面容失认）。在这里，我们总结了oddball FPVS框架对理解FI的贡献，包括其（a）典型发展，以及支持将该技术应用于临床测试的早期研究（例如自闭症谱系障碍）。这篇综述还包括对范式方法的深入分析，以及设计未来研究的指导方针。通过对130名观察者的数据进行大规模分组分析，可以深入了解奇怪的FPVS FI响应特性。总的来说，我们推荐oddball FPVS范式作为面部个性化行为或传统事件相关潜在EEG测量的替代方法。

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