基于脑电信号溯源分析的观看3D电视导致大脑疲劳研究

发布时间：2018-11-21 09:44

【摘要】：随着3D电视显示技术的普及,观看3D电视产生的大脑疲劳问题越来越受到关注。初步探讨长时间观看3D电视导致大脑疲劳的机理。采集20名受试者(男女比例1∶1)分别连续观看1 h 3D或2D影片前后各5 min的脑电信号,并使用主观疲劳问卷量表评估被试观看前后的疲劳状况。利用希尔伯特变换的方法,分析脑电各通道信号之间的同步性,探讨脑电信号的空间特性,并对观看2D/3D电视前后脑电信号进行溯源分析。主观疲劳问卷量表评估发现,长时间观看3D电视大脑会出现显著疲劳症状(P0.01)。脑电信号溯源分析发现,长时间观看2D/3D电视后大部分脑区各频段电流源密度有所减小,但统计结果无显著性差异(P0.05)。然而,观看3D电视后,枕叶在β2频段电流源密度显著增强(P0.01),且观看3D电视后枕叶显著增强部分与主观疲劳因子显著相关(P0.01)。观看3D电视后与观看2D电视后相比,缘上回(BA40),枕叶(BA18,BA19)和中央后回(BA3)等与空间视觉信息处理相关区域在β1频段电流密度分布显著增强(P0.05),处于相对较活跃状态。因此,研究结果可以推测,长时间观看2D/3D电视后大脑会出现疲劳症状,相比观看2D电视,观看3D电视会加大枕叶和缘上回等局部脑区的处理负担,这可能是长时间观看3D电视更容易产生脑疲劳的原因。
[Abstract]:With the popularity of 3D TV display technology, the problem of brain fatigue caused by watching 3D TV has attracted more and more attention. To explore the mechanism of brain fatigue caused by long time watching 3 D TV. EEG signals were collected from 20 subjects (1:1 of male and female ratio) before and after 1 h 3D or 2D film viewing for 5 min respectively. The fatigue status of the subjects was evaluated by subjective fatigue questionnaire before and after watching. By using Hilbert transform, the synchronism of EEG channel signals is analyzed, the spatial characteristics of EEG signals are discussed, and the source of EEG signals before and after watching 2D/3D TV is analyzed. Subjective fatigue questionnaire showed that there were significant fatigue symptoms in the brain after long time watching 3D TV (P0.01). The traceability analysis of EEG showed that the current source density of most brain regions decreased after watching 2D/3D TV for a long time, but there was no significant difference in the statistical results (P0.05). However, after watching 3D TV, the occipital lobe current source density in 尾 _ 2 band was significantly increased (P0.01), and the significant enhancement part of occipital lobe was significantly correlated with subjective fatigue factor (P0.01). Compared with 2D TV, the distribution of current density in 尾 1 band was significantly increased in the areas associated with spatial visual information processing, such as supramarginal gyrus (BA40), occipital lobe (BA18,BA19) and postcentral gyrus (BA3) (P0.05). In a relatively active state. As a result, the findings suggest that the brain suffers from fatigue after long hours of watching 2D/3D TV, and that watching 3D TV increases the processing burden on areas such as the occipital lobe and supramarginal gyrus, as opposed to 2D television. This may be the reason why watching 3 D TV for a long time is more likely to cause brain fatigue.
【作者单位】：南京航空航天大学生物医学工程系;
【基金】：国家自然科学基金(61171059)
【分类号】：R338;TN911.6

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