The aim of this work is to analyze malaise of viewing 3D videos using EEG to explore the relationship between power spectral features of EEG and the discomfort due to view 3D video. The EEG power spectrum was compared with gravity frequency adopted before viewing videos, during viewing videos as well as that of after rest. The subjective questionnaire was designed, and taken as a comparative factor of the EEG results. Experimental results showed that in the whole brain region, the power spectrum of viewing 3 D videos were lower than that of 2D, while the gravity frequency of viewing 3D videos is the same as in the pre frontal lobe, which has obvious differences (P <0. 05). But the EEG power spectrum and the gravity frequency have no obvious differences (P >0. 05). Besides, the score of the subjective questionnaire is reduced after viewing both 2D and 3D videos, though the score of viewing 3D showed more obvious than that of viewing 2D, there is no significant difference between them(P > 0. 05 ) . Conclusion Malaise caused by watching 3D videos has a strong correlation with features of Power spectrum and the gravity frequency. Compared to the 2D videos, the power spectrum and gravity frequency of the 3D videos were much lower, whereas the malaise caused by viewing 3D videos was also reflected in the subjective information. Therefore, the EEG power spectrum characteristics and subjective information could provide basic data for the evaluation of the malaise caused by viewing 3D videos.%采集受试者脑电并进行分析,进而研究观看3D影像所致不适感反映在脑电中的特征信息,探讨脑电的功率谱特征与3D影像所致不适感之间的关联.采用2D和3D对比的方法,采集受试者观看2D影像和3D影像前、中及休息一段时间后的脑电,对两种观影条件下各时段的脑电信号进行功率谱及重心频率计算,进行统计学t检验,并设计主观感受信息问卷,作为脑电结果的对照分析.观看3D影像组的脑电功率谱在整个脑区都比2D影像组低,其重心频率在额叶区也较低,且存在显著性差异(P＜0.05)；而在休息后两者的脑电功率谱之间不存在显著性差异(P＞0.05)；此外,观看2D影像和3D影像均使主观感受信息的得分降低,且3D降低更多,但是两者之间没有显著性差异(P＞0.05).结论:脑电功率谱及重心频率与观看3D影像所致不适感有较强的相关性,相比于观看2D影像、观看3D影像时脑电功率谱及重心频率降低,其所致不适感通过主观感受问卷也可体现.脑电功率谱特征结合主观感受信息的分析,为研究评价观看3D影像所致感的指标提供了一定的基础数据.
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