前额叶和顶枕部的alpha振荡能区分刺激冲突和反应冲突
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- 英文论文题名：Frontal and occipital-parietal alpha oscillations distinguish between stimulus interference and response interference
- 论文作者：唐丹丹 ; 胡理 ; 雷怡 ; 李红 ; 陈安涛
- 英文论文作者：Dandan Tang ; Li Hu ; Yi Lei ; Hong Li ; Antao Chen ; School of Education Science ; Zunyi Normal College ; Key Laboratory of Cognition and Personality(Ministry of Education) and School of Psychology ; Southwest University ; Research Centre for Brain Function and Psychological Science ; Shenzhen University
- 年：2015
- 作者机构：遵义师范学院教育科学学院;西南大学心理学部认知与人格教育部重点实验室;深圳大学心理与社会学院;
- 论文关键词：alpha频带 ; 脑电 ; 干扰 ; 练习 ; P3
- 英文论文关键词：alpha-band ; electroencephalographic(EEG) ; interference ; practice ; P3
- 会议召开时间：2015-10-16
- 会议录名称：第十八届全国心理学学术会议摘要集——心理学与社会发展
- 英文会议录名称：Proceedings of the 18th National Academic Congress of Psychology
- 语种：中文
- 分类号：B842
- 学会代码：ZGXG
- 会议名称：第十八届全国心理学学术会议
- 会议地点：中国天津
- 主办单位：中国心理学会
- 学会名称：中国心理学会
- 页数：2
- 文件大小：772k
- 原文格式：D
- 会议级别：全国
摘要
目标和分心物之间的干扰可能发生在刺激加工水平上也可能发生在反应水平上。然而,对于发生在这两种水平上的干扰所涉及的神经振荡机制,目前的研究尚不清楚。为了解决这一问题,我们当前的研究采用4:2映射设计(4:2 mapping design,两种目标对应于同一个反应)和练习(practice)范式,记录了健康成人被试完成色-词Flanker任务(color-word Flanker task)时的行为和脑电(electroencephalographic,EEG)数据。反应时(response time,RT)结果显示,练习虽然对刺激干扰(stimulus interference;刺激不一致减一致,stimulus incongruent minus congruent:SI-CO)无明显影响,但能导致反应干扰(response interference;反应不一致减刺激不一致,response incongruent minus SI:RI-SI)显著增加。事件相关电位(event-related potential,ERP)结果显示,在中顶区(centro-parietal region),(1)P3波幅差异(SI-CO)不受练习因素影响,这表明P3波幅可能反应了刺激加工的维持;(2)练习之后,RI试次比SI试次引发了更大的P3波幅,这说明练习可能加强了反应干扰。神经振荡结果显示,练习之后,alpha频带内的能量差异(SI-CO,RI-SI)在右前额叶区域(right-frontal region)和顶枕区(occipital-parietal region)都明显更负,这表明alpha振荡活动能区分不同的干扰类型。因此,这些发现暗示,刺激干扰和反应干扰分别调节了前额叶和顶枕区的alpha振荡活动。
Interference between target and distraction can occur at the level of both stimulus and response processing. However, the neural oscillations underlying occurrence of the interference in different levels have not been understood well. Here, we reveal such a neural oscillation modulation by combining a 4:2 mapping design(two targets are mapped into one response key) with a practice paradigm when healthy human participants were performing a novel color-word Flanker task. Response time(RT) results reveal constant stimulus interference(stimulus incongruent minus congruent, SI-CO) but increased response interference(response incongruent minus stimulus incongruent, RI-SI) with practice. Event-related potential(ERP) results demonstrate stable P3 amplitude differences for the SI-CO in the centro-parietal region across practice, which may reflect maintenance of the stimulus processing; and significantly larger P3 amplitudes in the same region for the RI relative to SI trial type in post-practice stage, which may reflect inhibition of the distraction response. Brain oscillatory results reveal more negative alpha-band magnitude differences for the SI-CO in the right-frontal region and for the RI-SI in the occipital-parietal region with practice, indicating that alpha-band activity is implicated in the occurrence of different patterns of interference. Taken together, these findings suggest that stimulus- and response-interference mediate the alpha-band oscillations in the frontal and occipital-parietal regions, respectively.
Interference between target and distraction can occur at the level of both stimulus and response processing. However, the neural oscillations underlying occurrence of the interference in different levels have not been understood well. Here, we reveal such a neural oscillation modulation by combining a 4:2 mapping design(two targets are mapped into one response key) with a practice paradigm when healthy human participants were performing a novel color-word Flanker task. Response time(RT) results reveal constant stimulus interference(stimulus incongruent minus congruent, SI-CO) but increased response interference(response incongruent minus stimulus incongruent, RI-SI) with practice. Event-related potential(ERP) results demonstrate stable P3 amplitude differences for the SI-CO in the centro-parietal region across practice, which may reflect maintenance of the stimulus processing; and significantly larger P3 amplitudes in the same region for the RI relative to SI trial type in post-practice stage, which may reflect inhibition of the distraction response. Brain oscillatory results reveal more negative alpha-band magnitude differences for the SI-CO in the right-frontal region and for the RI-SI in the occipital-parietal region with practice, indicating that alpha-band activity is implicated in the occurrence of different patterns of interference. Taken together, these findings suggest that stimulus- and response-interference mediate the alpha-band oscillations in the frontal and occipital-parietal regions, respectively.
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