Abstract
The objective here is to investigate the effects of 3D images on viewers, study the relationship between power spectrum features of EEG and discomfort of the viewers, and try to figure out an objective index of discomfort caused by watching 3D images. Ten volunteers were divided into two groups, and EEG were recorded in both groups before 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. There was an increase in EEG power spectral density in the frontal and occipital areas during the experiment, and especially the phenomena in 3D were more obvious than those in 2D. Meanwhile, statistical methods showed a significant difference between the two experimental groups. We conclude that the EEG power spectral density is strongly correlated with visual discomfort. PSD increases while the visual discomfort aggravates. The results of the EEG PSD are also consistent with the statistical results. Further, the EEG power spectral density is expected to serve as the objective index for analyzing the discomfort caused by watching 3D images.
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