利用情绪量表筛选出对应“愉快、快乐、悲伤、恐惧”四种情绪的音乐片段作为刺激,同步记录脑电,从脑区,情绪极性、强度等方面对脑电仪波功率的变化进行了分析。结果表明:脑电仪波功率的变化与情绪的极性和强度密切相关;“快乐与恐惧”、“愉快与恐惧”、“恐惧与悲伤”之间仪波功率差异显著;顶枕区仪波功率在爻极性情绪中强度强的明显小于强度弱的;在强度强的情绪中,正极性情绪显著大于负极性情绪。
Four musical excerpts representing four different emotions of 'happy, joy, sad, and fear' were selected as stimuli by emotions scale. The electroencephalogram was recorded simultaneously and the alpha power was analyzed with factors of brain region, valence, and intensity of the musical emotions. The results showed that the alpha power was closely related to emotional valence and intensity. The difference between 'joy and fear', 'happy and fear', and 'fear and sad' was statistically significant. In the parieto-occipital region, the alpha power was significantly larger in calm emotion than in intense emotion within negative emotions; meanwhile within intense emotions the alpha power was significantly larger in positive emotion than in negative emotion.