述情障碍者的情绪启动效应特征  

Characteristics of Affective Priming Effect in Alexithymics

作　　者：蚁金瑶[1] 罗英姿[1] 钟明天[1] 凌宇[1] 姚树桥[1] 

机构地区：[1]中南大学湘雅二医院心理中心,长沙410011

出　　处：《中国心理卫生杂志》2007年第5期302-306,共5页Chinese Mental Health Journal

基　　金：博士学科点专项科研基金资助(20050533026);湖南省自然科学基金资助(05JJ30053)

摘　　要：目的:分析述情障碍者的情绪启动效应特征,探讨述情障碍者是否存在情绪自动加工的缺陷。方法:采用多伦多述情障碍20个条目量表在大学生中筛选出述情障碍者和非述情障碍者各23人,要求受试完成阈下和阈上两种情绪启动任务,比较两组受试在对目标图片作出判断的正确率和平均反应时的差异。结果:在阈下和阈上启动任务中的正确率,情绪启动状态的主效应均显著(F=14.38,P=0.000,F=3.28,P=0.042),启动和控制状态的反应正确率均高于非启动状态(阈上:启动状态97.3%/非启动状态96.1%,阈下:启动状态96.8%,控制状态96.8%,非启动状态94.7%),而启动状态的平均反应时则均短于非启动状态(阈下:启动,537.2ms;控制,550.8ms;非启动598.4ms);受试对负性图片的反应正确率显著高于正性图片(如阈下:96.9%/95.3%,阈上:97.6%/95.8%),对负性图片平均反应时显著短于正性目标图片;在阈下启动任务中,述情障碍组与非述情障碍组在正确率和平均反应时上均无显著性差异;在阈上启动任务中,述情障碍组的平均反应时显著长于非述情障碍组(536.3ms/494.4ms)。结论:在无意识水平,述情障碍者对情绪刺激的自动加工不存在缺陷,而对意识到的情绪刺激的自动加工存在明显缺陷。Objective： Alexithymics have difficulty in identifying and describing feelings to other people, The purpose of this study is to investigate the characteristics of affective priming effects of alexithymics and examine their deficit of emotional automatic processing. Method： 23 alexithymics and 23 non-alexithymics were screened out in university students, they were required to judge whether the target pictures were positive or negative as soon as possible while prime pictures were supraliminally or subliminally presented. The correct rates and the mean response latencies were subjected to ANOVA with repeated measures. Result： In both supraliminal and subliminal affective priming tasks, the mean response latencies were significantly longer for affectively incongruent trials, as compared to those for affectively congruent and control trials. The correct rates for affectively incongruent trials were the lowest. Subjects were relatively slower to respond to positive target pictures than to negative target pictures （96.9%/95.3% , 97.6%/ 95. 8% ） . In subliminal affective priming task, there were no differences of correct rates and latencies between alexithymics and nonalexithymics. In supraliminal priming task, the latency of alexithymics was longer than that of nonalex- ithymics （ 536. 3 ms/496. 4ms ） - Conclusion： Alexithymics have deficit in automatic processing for emotional information they are aware of, but not for those can not be aware.

关 键 词：情绪启动效应 阈上 阈下 述情障碍 病例对照研究 

分 类 号：R749.4[医药卫生—神经病学与精神病学]