北京生物医学工程

观看3D影视所致不适感的EEG初步分析

Preliminary study on EEG-based analysis of discomfort caused by watching 3D images

作者：尹杰靳静娜刘志朋殷涛

单位：中国医学科学院北京协和医学院生物医学工程研究所（北京 300192）

分类号：

出版年·卷·期（页码）：2012·31·2（150-153）

摘要：

目的研究3D影视对观看者的影响，探讨脑电信号的功率谱特征与观看者不适感之间的联系，寻找用脑电信号的特征评价3D影视导致不适感的客观指标。方法受试者10人分别在3D和2D两种实验条件下观看影视，采集受试者在观看影视前静息状态和观影过程中的脑电信号，并进行功率谱密度（power spectral density,PSD）分析及重复测量的方差分析。结果随着受试者观影时间的延长，脑电功率谱密度在额区和枕区的相关导联均增加，但3D实验条件下的增加趋势比2D条件下明显，二者的均值有显著性差异。结论脑电功率谱密度与视觉不适感有较强的相关性，有望成为评价3D影视引起视觉不适感的客观标准。

Objective To investigate the effects of 3D images on viewers，study the relationship between power spectrum features of EEG and discomfort of the viewers，figure out objective index of discomfort caused by watching 3D images. Methods EEG signals of 10 volunteers were recorded before the experiment and during the experiment of watching 3D and 2D images，power spectral density (PSD) and variance for repeated measures were extracted to analyze the objective index of discomfort. Results With the prolongation of watching time，the EEG power spectral densities in the frontal and occipital areas increased，and the phenomena in 3D were more obvious than that in 2D. There was a significant difference between the two groups. Conclusions The EEG PSD is strongly correlated with visual discomfort and is expected to serve as the objective index for analyzing the discomfort caused by watching 3D images.

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