自动化加工范式下效价、唤醒度、基本情绪之间关系的ERP研究

发布时间：2018-05-01 18:08

本文选题：跨通道延迟范式 + 效价　；参考：《信阳师范学院》2014年硕士论文

【摘要】：基本情绪理论的兴起可以追溯到达尔文时代,基于基本情绪的研究成果非常丰富。然而,20世纪80年代兴起的社会建构思潮,对基本情绪理论产生了较大的冲击。基本情绪理论虽然自身存在较大的不足,它仍然是情绪研究领域的主导理论之一,许多研究仍然难以摆脱基本情绪理论的框架。本文通过两个实验来探讨效价、唤醒度、基本情绪之间的关系。实验一和实验二均采用修改过的跨通道延迟反应范式和ERP技术,分别对效价与唤醒度之间的关系,效价、唤醒度与基本情绪之间的关系进行探讨。实验一和实验二的实验材料均来自采用国际情绪图片库(IAPS),图片库数据来自国内学者周仁来等的本土化研究。实验一采取效价与唤醒度分别匹配的方法随机选择实验图片,实验二先对情绪图片按基本情绪类别进行分类,然后再采取匹配法对效价与唤醒度进行同时匹配,以消除由于效价与唤醒度的差异对结果产生的影响。实验一中在150-250ms、250-350ms、350-450ms三个分析时段下均能探测到效价与唤醒之间的交互作用,这表明效价与唤醒度对脑波的调节作用不具有独立性。sLORETA结果显示在350-450ms时高唤醒度图片在前扣带回皮层及边缘叶(布鲁德曼24区)产生了较大的激活,差异达到显著水平,负性情绪图片也引起了相似的激活。同时,对左右额区对应电极(F7和F8、Fpl和Fp2)进行分析发现位于左侧的各电极点上高低唤醒度之间存在显著的差异,而右侧各电极点未探测到显著的差异。实验二在N1,200-300ms,300-400ms均能探测到恐惧图片和厌恶图片之间的显著差异。综合实验一与实验二的数据我们可以得出以下结论：(1)效价与唤醒度在自动化加工条件下的加工过程并不独立。(2)人脑对不同唤醒度的积极情绪的加工机制不同。(3)对高低唤醒度的区分与左侧额叶的活动有较大的关系。(4)在控制了效价与唤醒度的情况下,恐惧图片与厌恶图片具有不同的注意机制。(5)不同种类的基本情绪具有不同的神经机制,而这些神经机制的差异与效价和唤醒度无关。
[Abstract]:The rise of basic emotion theory can be traced back to Darwin's time, and the research results based on basic emotion are very rich. However, the trend of social construction in 1980's had a great impact on the basic emotional theory. Although the basic emotion theory has its own shortcomings, it is still one of the leading theories in the field of emotional research, and many researches still find it difficult to get rid of the framework of the basic emotion theory. This paper discusses the relationship between titer, arousal, and basic emotion through two experiments. The relationship between titer and arousal degree, the relationship between titer and arousal degree, and the relationship between arousal degree and basic emotion were discussed by using the modified cross-channel delay response paradigm and ERP technique in both experiments 1 and 2. The experimental materials of experiment one and experiment two are from the international emotion picture library IAPSU, and the data from the local research of Zhou Renlai, a domestic scholar. In experiment 1, the method of matching the titer and arousal degree was adopted to select the experimental pictures randomly. In experiment 2, the emotion pictures were classified according to the basic emotion category, and then the titer and the arousal degree were matched simultaneously by matching method. In order to eliminate the effect of the difference of titer and arousal degree on the result. In experiment 1, the interaction between titer and arousal was detected in the three analytical periods of 150-250 Ms ~ (250) Ms ~ (50) Ms ~ (350) Ms ~ (350) Ms ~ (350) Ms ~ (350) Ms ~ (35) ~ 450 Ms. The results indicated that the effects of titer and arousal on the regulation of cerebral waves were not independent. The results showed that the high arousal images in the anterior cingulate cortex and marginal lobe (Bludman 24 region) were activated in 350-450ms, and the difference reached a significant level. Negative emotional images also cause similar activation. At the same time, the corresponding electrodes F7 and F8 FPL and Fp2 in the left frontal region were analyzed. It was found that there was a significant difference between the high and low arousal degrees at the left electrode points, but no significant difference was found at the right electrode points. In experiment 2, the difference between fear picture and aversion picture was detected in N1200-300 Ms ~ 400ms. Synthesizing the data of experiment 1 and experiment 2, we can draw the following conclusion: 1) the processing process of titer and arousal degree under the condition of automatic processing is not independent. 2) the processing mechanism of positive emotion of human brain to different arousal degree is different. The difference between high and low arousal degree is related to the activity of left frontal lobe. 4) in the case of controlling titer and arousal degree, Fear picture and aversion picture have different attention mechanism. 5) different kinds of basic emotions have different neural mechanisms, but the differences of these neural mechanisms are independent of titer and arousal degree.
【学位授予单位】：信阳师范学院
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：B842

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