摘要
采用事件相关电位技术和三类刺激的经典oddball范式,以内隐的方式探讨外倾特质个体的自我参照加工程度效应及其神经机制。实验发现,外倾被试的高自我相关名字在各个ERP成分上都比其他刺激诱发了更大波幅。在P2上,高自我相关的刺激比其他刺激诱发了更大的P2波幅和更长的P2潜伏期,其中中线脑区的效应最大。在N2上,高自我相关的刺激比其他刺激诱发了更大的N2波幅和更短的N2潜伏期,其中额区位置的效应最大。控制组被试的高自我相关名字比外倾型被试的高自我相关名字诱发了更大的N2的波幅和更短的N2潜伏期。在P3平均波幅上,高自我相关的刺激比其他刺激诱发了更大的P3波幅,其中中线效应最大。对比外倾型被试,控制组被试的自我参照刺激诱发了更大的P3波幅。研究结果表明外倾特质个体的自我参照加工具有程度效应,但对比控制组被试,外倾特质个体的自我参照加工的程度效应更弱。
The self-reference effect is the enhanced speed and quality of processing and memorization observed with respect to information that is related to the individual’s self-concept. According to the preceding research, self-reference effect have the different with degree, and different degree of intimacy with the core self. Then, the brain on the depth of its reference treatment is different, also. Highly self-relevant stimulus will get faster response compared with minimally self stimulate in the brain. This is called the degree of self-reference processing effect. On the basis of summarizing the preceding research, this study uses the event related potential technology, through ERPs experiments investigation the degree of extroversion individuals of self-reference processing effect and neural mechanisms. Experiment adopted three kinds of classic oddball models, using an implicit way to investigate the extroversion individual self-reference processing degree effect. Used three-character non-name lexical phrases served as the standard stimulus, and a three-character non-lexical phrase served as target stimuli. Six categories of stimuli were used in a three-stimulus oddball paradigm. Three sets of self-relevant stimuli, the non-self- relevant stimulus, and two filler stimuli, served as distracters. The name of the participant was used as the highly self-relevant stimulus, the name of participant’s father as the moderately self-relevant stimulus, the name of China’s leaders the minimally self-relevant stimulus, and the name of the president of the United States, served as the non-self-relevant stimulus. All names are three Chinese characters long. Familiarity was equivalent across all sets of stimulus names. All name stimuli were made into images on a PC using Microsoft Office Picture Manager. Image size, word length, and complexity were matched across the name conditions. Experiment found that on the P2 amplitude, highly self-related stimuli induced greater P2 amplitude than other stimulation. On the latent peri
出处
《心理学报》
CSSCI
CSCD
北大核心
2016年第8期1002-1012,共11页
Acta Psychologica Sinica
基金
国家自然科学基金青年项目(31500883)
中国博士后科学基金面上项目(2014M561086)
教育部人文社会科学研究规划基金项目(13YJA190001)
湖南省自然科学基金面上项目(2015JJ2101,2015JJ2097)
湖南省社会科学基金青年项目(15YBA264)
湖南省教育科学“十二五”规划课题(XJK0150XL002)
湖南省教育厅科学研究优秀青年项目(15B152)
关键词
外倾
自我参照加工
程度效应
ERPS
N2
P3
extroverted
self-reference effect
degree effect
event-related potential
N2
P3
