Asymmetry of Brain Emotional State Based on EEG and VR Techniques
Lan Wenwei1,2, Chen Chen1,2, Zhang Jin1,2, Zhang Jiaqi1,2, Li Feng1,2, Gao Junfeng1,2*
1(School of Biomedical Engineering, South-Central University for Nationalities, Wuhan 430074, China) 2(Key Laboratory of Cognitive Science, State Ethnic Affairs Commission, Wuhan 430074, China)
Abstract：In order to distinguish the emotional state of the brain and study the hemispheric asymmetry in different emotional states,20 healthy audiovisual barrier-freesubjects with an average age of 23.9 years were selected as experimental subjects, virtual reality technology and EEG technology were combined to collect EEG signals of subjects under different VR film stimulation, and then the average power spectral density of each frequency band was extracted for uses in the calculation of the index of cerebral hemisphere asymmetry on each frequency band and each brain region. Results show that the asymmetry index of positive emotion and negative emotion in frontal region hemisphere were smaller than that of neutral emotion, whereas in alpha band, the trend of asymmetry index on positive (0.130±0.227), neutral (0.058±0.240) and negative (0.006±0.130) decreased in sequence, indicating that the left frontal region was more active under positive emotion, and there was significant difference between positive emotion and negative emotion group (P < 0.05). While in other bands, the asymmetry index of frontal hemisphere had less difference between the three states. These results provided a new way to distinguish different emotions, and also provided a new method for the judgment and treatment of brain function diseases and psychological diseases.
蓝文威, 陈晨, 张金, 张家琦, 黎峰, 高军峰. 联合脑电信号与虚拟技术的大脑情绪状态的半球不对称性研究[J]. 中国生物医学工程学报, 2021, 40(3): 266-271.
Lan Wenwei, Chen Chen, Zhang Jin, Zhang Jiaqi, Li Feng, Gao Junfeng. Asymmetry of Brain Emotional State Based on EEG and VR Techniques. Chinese Journal of Biomedical Engineering, 2021, 40(3): 266-271.
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