摘要
为探究自我-他人重叠影响疼痛共情的神经机制,记录并分析被试在高、中、低重叠程度条件下共情判断的脑电活动。发现在早期N2上,重叠程度三水平间差异显著,表现为密友<熟人<陌生人(密友与熟人差异边缘显著);在晚期P3上,疼痛条件下重叠程度间呈显著差异,密友显著大于熟人和陌生人;在LPP上疼痛条件诱发更大波幅。表明早期阶段(N2)区分不同重叠程度,可能是对威胁性刺激的检测阶段,自我-他人重叠程度影响共情加工晚期阶段(P3)的社会认知评价加工。
Empathy for pain is a psychological phenomenon in interpersonal interaction.Previous studies have suggested the preference of empathy for pain,especially the priming effect of friends.However,how do we perceive the pain of close friend and acquaintance when there is a different degree of overlap with ourselves?Therefore,the aim of the current study is to explore the cognitive mechanism of self-other overlap affecting empathy for pain by event-related potential study.The experiment was designed with a 2(empathy judgement:pain,non-pain)×3(self-other overlap degree:high,medium,low)within-subject study.Self-other overlap was manipulated by the name of the close friend,acquaintance and stranger.Prior to the experiment,the subjects needed to provide the names of close friends and acquaintances according to the instructions and filled in the Inclusion of Other in the Self(IOS)scale and Questionnaire for Personality Trait Assessment.At the beginning of the experiment,all subjects were told that they would first see the name stimuli(close friend,acquaintance,stranger)followed by pictures.The subjects were instructed to imagine that the scene in the picture happened to the person mentioned earlier.Subsequently,they were instructed to immediately response to empathy judgement.There were 6 blocks in this experiment,each block had 60 trails.6 conditions were randomly presented,so there was a total of 360 trails.The ERP analysis time course was from the empathy judgment stimulus presentation(0~1000 ms),with the first 200 ms as the baseline period.Combined with the relevant research and the purpose of this study,the selected ERP components were:N1(120~160 ms),N2(220~280 ms),P3(360~430 ms),LPP(450~650 ms).In terms of behavioral data,the study found that the reaction time of the close friend condition was significantly smaller than the acquaintances and the accuracy rate of the close friend condition was significantly higher than the acquaintances and strangers.In the ERPs results,there were no significant main effects and interaction effect.N2 amplitude was decreased in the close friend condition of empathy judgement than acquaintances and strangers.The data showed a significant main effect of the amplitude of P3.Pain judgment elicited significantly larger P3 and LPP amplitude than that of non-pain judgment.Meanwhile,there was a significant interaction of self-other overlap and empathy judgement.Under the painful judgement condition,close friend condition elicited larger amplitude in P3 compared with acquaintances and strangers.The behavioral results showed that individuals were more sensitive to the pain of the close friend than the acquaintance.Close friend with larger N2 amplitude and the early perceptual processing stage reflected in N2 was more likely to be a threat-detection stage.Furthermore,the increased P3 indicated that self-other overlap factors enhanced top-down cognitive control and evaluation processing of empathy for pain.In conclusion,the early perception could discriminate degree of self-other with N2 which was more likely to reflect a threat-detection stage,and degree of self-other modulated the late cognitive control processing stage of empathy for pain.This study further improved the cognitive mechanism of the influence of self-other overlap on empathy for pain.
作者
周海波
甘烨彤
易靓靓
胡瑞
谭千保
钟毅平
Zhou Haibo;Gan Yetong;Yi Liangliang;Hu Rui;Tan Qianbao;Zhong Yiping(School of Education,Hunan University of Science and Technology,Xiangtan,411201;Department and Institute of Psychology,Ningbo University,Ningbo,315211;School of Computer Science and Engineering,Hunan University of Science and Techonolgy,Xiangtan,411201;School of Psychology,Central China Normal University,Wuhan,430079;Department of Psychology,Hunan Normal University,Changsha,410081)
出处
《心理科学》
CSSCI
CSCD
北大核心
2019年第5期1194-1201,共8页
Journal of Psychological Science
基金
全国教育科学规划教育部重点课题(情绪对工作记忆的阶段化影响，DBA170298)的资助
