通过采集志愿者观看背景视差过大的3D影片前后的脑电数据, 来研究该效应对人体健康的影响。实验共选取20例有效样本, 利用快速傅里叶变换法(FFT)提取特征波段, 计算出各频带的能量和功率, 并由此得到功率谱和重心频率。此外还设计问卷定性了解志愿者的疲劳程度。根据主观疲劳问卷和对比看前看后的脑电参数, 分析了观看背景视差过大的3D影片后人体脑电信号变化的关系。实验结果表明志愿者看前看后的各项脑电参数出现了改变, 并全部主观反映出现疲劳。因此脑电参数结合主观问卷可成为3D影片疲劳评估的参考指标。

Volunteers were asked to watch 3D films with big background parallax,and their EEG data were collected to find the impact on body health. 20 effective samples were selected and, by using the algorithm of fast Fourier transform (FFT), the characteristic band of EEG was extracted with the energy and power of each frequency band calculated. Power spectrum and gravity frequency were then obtained. In addition, questionnaires wre designed for understanding volunteers′ degree of visual fatigue qualitatively. The experimental results of the subjective fatigue questionnaire and the EEG signal's change of pre-and post-watching were used to analysis the relationship of body EEG change after watching 3D movies with big background parallax. It is experimentally shown that watching 3D movies with big background parallax can result in the EEG parameters of volunteers changed and subjective fatigue. Therefore, the EEG parameters and subjective questionnaire can be used as reference index of the 3D films on human health.