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首页> 美国卫生研究院文献>Frontiers in Human Neuroscience >Global Electroencephalography Synchronization as a New Indicator for Tracking Emotional Changes of a Group of Individuals during Video Watching
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Global Electroencephalography Synchronization as a New Indicator for Tracking Emotional Changes of a Group of Individuals during Video Watching

机译：全球脑电图同步作为跟踪视频观看过程中一群人情绪变化的新指标

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In the present study, we investigated whether global electroencephalography (EEG) synchronization can be a new promising index for tracking emotional arousal changes of a group of individuals during video watching. Global field synchronization (GFS), an index known to correlate with human cognitive processes, was evaluated; this index quantified the global temporal synchronization among multichannel EEG data recorded from a group of participants (n = 25) during the plays of two short video clips. The two video clips were each about 5 min long and were designed to evoke negative (fearful) or positive (happy) emotion, respectively. Another group of participants (n = 37) was asked to select the two most emotionally arousing (most touching or most fearful) scenes in each clip. The results of these questionnaire surveys were used as the ground-truth to evaluate whether the GFS could detect emotional highlights of both video clips. The emotional highlights estimated using the grand-averaged GFS waveforms of the first group were also compared with those evaluated from galvanic skin response, photoplethysmography, and multimedia content analysis, which are conventional methods used to estimate temporal changes in emotional arousal during video plays. From our results, we found that beta-band GFS values decreased during high emotional arousal, regardless of the type of emotional stimulus. Moreover, the emotional highlights estimated using the GFS waveforms coincided best with those found by the questionnaire surveys. These findings suggest that GFS might be applicable as a new index for tracking emotional arousal changes of a group of individuals during video watching, and is likely to be used to evaluate or edit movies, TV commercials, and other broadcast products.
机译：在本研究中，我们调查了全局脑电图（EEG）同步是否可以作为跟踪视频观看过程中一群人的情绪唤醒变化的新指标。评估了全球田间同步（GFS）这一已知与人类认知过程相关的指标；该指数量化了在播放两个短视频剪辑期间从一组参与者（n = 25）记录的多通道EEG数据之间的全局时间同步。这两个视频剪辑分别长约5分钟，旨在分别唤起消极（恐惧）或积极（幸福）情绪。另一组参与者（n = 37）被要求在每个剪辑中选择两个在情感上引起最多（最动人或最恐惧）的场景。这些问卷调查的结果被用作评估GFS是否可以检测到两个视频剪辑的情感亮点的依据。还比较了使用第一组总体平均GFS波形估算的情绪高光与通过皮肤电反应，光电容积描记法和多媒体内容分析评估的情绪高光，这是用于估计视频播放过程中情绪唤醒的时间变化的常规方法。从我们的结果中，我们发现，无论情绪刺激的类型如何，在强烈的情绪唤起过程中，β带GFS值都会下降。此外，使用GFS波形估算的情绪高光与问卷调查发现的情绪高光最吻合。这些发现表明，GFS可以用作跟踪一组人在视频观看过程中的情绪唤醒变化的新指标，并且很可能用于评估或编辑电影，电视广告和其他广播产品。

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