摘要
采用事件相关电位(ERP)技术探讨了阈下正负性情绪启动条件下图像记忆信息加工过程的脑内时程动态变化.结果发现:在120～220ms和250～400ms两个时窗内,阈下正负性情绪启动对图像记忆所诱发的脑电波(ERPs)都有影响,体现在差异波成分上,P2峰值潜伏期约为170ms,地形图显示额中部活动最强,反映了负性情绪对图像记忆信息加工过程中注意集中度的调控;P3峰值潜伏期约为310ms,地形图显示额前部活动最强,反映了大脑对负性情绪偏向的抑制过程.
The event-related brain potentials（ERP） technique was used to study the effects of subliminal priming emotions on iconic memory.The study presented pictures from Chinese Affective Picture System（CAPS） subliminally to prime positive and negative emotions and then adopted Sperling＇s partial-report procedure to require the subject to remember letters according to the tone prompts and detected whether he/she could remember them or not.After that,an emotion self-rating scale was done.The findings showed that in the two time windows（120~220 ms and 250~400 ms）,the two kinds of affective priming had different effects on iconic memory,and the difference waves（＂negative＂-＂positive＂）,P2（170 ms） and P3（310 ms）,had different located regions,indicating a different information processing of iconic memory.
出处
《西南大学学报（自然科学版）》
CAS
CSCD
北大核心
2011年第8期162-166,共5页
Journal of Southwest University(Natural Science Edition)
基金
国家自然科学基金资助项目(30970892)
西南大学国家重点学科建设资助项目(NSKD08002)
关键词
事件相关电位
阈下情绪启动
图像记忆
斯伯林部分报告范式
event-related brain potential
subliminal affective priming effect
iconic memory
Sperling＇s partial-report paradigm
