[Effects of switching between neutral and emotional stimuli: an ERP study on "switch cost"].

航天医学与医学工程 Pub Date : 2005-06-01

Hui Shi, Lun Zhao, Yue-jia Luo, Miao Peng, Kui-he Jin

{"title":"[Effects of switching between neutral and emotional stimuli: an ERP study on \"switch cost\"].","authors":"Hui Shi, Lun Zhao, Yue-jia Luo, Miao Peng, Kui-he Jin","doi":"","DOIUrl":null,"url":null,"abstract":"Objective: To investigate if switch cost involved in shifting between neutral and emotional stimuli is reflected by ERPs correlates.Method: The subjects were 14 healthy right-handed college students (7 females, 7 males). Garavan's (1998) task paradigm which was important in studying inner attention shifting was used. The subjects were asked to watch a stimulus sequence comprising Schematic line drawings of faces with neutral and emotional expressions, and make counts of them (neutral faces or emotional faces). EEG signals were recorded at 64 sites.Result: 1) Switching between stimuli elicited slow responses, increased N2 amplitudes and reduced P300 amplitudes. 2) A negative component (Nd370) was found when ERP wave during non-switching trials was subtracted from that during switching trials, and it was found obviously at extensive parietal area. 3) Nd370 amplitude during switching from emotional stimuli to neutral ones was smaller than that during switching from neutral stimuli to emotional ones.Conclusion: Nd370 can be taken as an index of switch cost effect.","PeriodicalId":63677,"journal":{"name":"航天医学与医学工程","volume":"18 3","pages":"227-9"},"PeriodicalIF":0.0000,"publicationDate":"2005-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"航天医学与医学工程","FirstCategoryId":"1085","ListUrlMain":"","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}

引用次数: 0

Abstract

Objective: To investigate if switch cost involved in shifting between neutral and emotional stimuli is reflected by ERPs correlates.

Method: The subjects were 14 healthy right-handed college students (7 females, 7 males). Garavan's (1998) task paradigm which was important in studying inner attention shifting was used. The subjects were asked to watch a stimulus sequence comprising Schematic line drawings of faces with neutral and emotional expressions, and make counts of them (neutral faces or emotional faces). EEG signals were recorded at 64 sites.

Result: 1) Switching between stimuli elicited slow responses, increased N2 amplitudes and reduced P300 amplitudes. 2) A negative component (Nd370) was found when ERP wave during non-switching trials was subtracted from that during switching trials, and it was found obviously at extensive parietal area. 3) Nd370 amplitude during switching from emotional stimuli to neutral ones was smaller than that during switching from neutral stimuli to emotional ones.

Conclusion: Nd370 can be taken as an index of switch cost effect.

本刊更多论文

[中性刺激和情绪刺激之间转换的影响:一个关于“转换成本”的ERP研究]。

目的:探讨中性刺激与情绪刺激转换的转换成本是否通过erp相关因子反映。方法:选取14名健康大学生右撇子，其中男7女7。本文采用了Garavan(1998)的任务范式，该范式在研究内部注意转移方面具有重要意义。受试者被要求观看一个刺激序列，包括中性表情和情绪表情的面部简图，并对它们进行计数(中性脸或情绪脸)。记录64个部位的脑电图信号。结果:1)刺激切换引起反应缓慢，N2幅值升高，P300幅值降低。2)将非切换时的ERP波与切换时的ERP波相减，发现了一个负分量(Nd370)，且在广泛的顶叶区存在明显的负分量。3)情绪刺激向中性刺激转换时的Nd370波幅小于中性刺激向情绪刺激转换时的Nd370波幅。结论:Nd370可作为转换成本效应的指标。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

航天医学与医学工程

自引率

0.00%

发文量

3389