A mismatch process in brief delayed matching-to-sample task: an fMRI study

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	A mismatch process in brief delayed matching-to-sample task: an fMRI study
	Zhang, Xi1 ; Ma, Lin 2; Li, Shunwei 3; Wang, Yuping 5; Weng, Xuchu4 ; Wang, Luning 1; X. Zhang
摘要	Our previous ERP studies have consistently demonstrated that a negativity N270 elicited by incongruent information in visual S1-S2 matching task represents a type of conflict process, which is distinct from that represented by the classic conflict task or other negative components in delayed matching-to-sample stimulus presentation patterns, since the inter-stimulus interval between S1 and S2 was presented as shorter as 500 ms. The N270 component of ERP was shown to reflect conflict processing during the simple working memory operations. In the present study, a functional MRI (fMRI) was used to investigate the visuospatial characteristics of brain activation associated with the task eliciting N270. The fMRI data showed an increased activation in the right anterior cingulate cortex (ACC, BA 24) and right dorsolateral prefrontal cortex (DLPFC, BA 46), and activation biased to the left occipitotemporal cortex (BA 37) in the incongruent condition. It is suggested that the greater activations of the right ACC coupling with right DLPFC to incongruent task reflect functional efficiency of the right cingulo-prefrontal network during the brief visual delayed period discrimination performance and mismatched information processing.; Our previous ERP studies have consistently demonstrated that a negativity N270 elicited by incongruent information in visual S1-S2 matching task represents a type of conflict process, which is distinct from that represented by the classic conflict task or other negative components in delayed matching-to-sample stimulus presentation patterns, since the inter-stimulus interval between S1 and S2 was presented as shorter as 500 ms. The N270 component of ERP was shown to reflect conflict processing during the simple working memory operations. In the present study, a functional MRI (fMRI) was used to investigate the visuospatial characteristics of brain activation associated with the task eliciting N270. The fMRI data showed an increased activation in the right anterior cingulate cortex (ACC, BA 24) and right dorsolateral prefrontal cortex (DLPFC, BA 46), and activation biased to the left occipitotemporal cortex (BA 37) in the incongruent condition. It is suggested that the greater activations of the right ACC coupling with right DLPFC to incongruent task reflect functional efficiency of the right cingulo-prefrontal network during the brief visual delayed period discrimination performance and mismatched information processing.
关键词	delayed matching-to-sample task functional magnetic resonance imaging (fMRI) mismatch anterior cingulate cortex dorsolateral prefrontal cortex
学科领域	认知神经科学
	2008-03-01
语种	英语
发表期刊	EXPERIMENTAL BRAIN RESEARCH
ISSN	0014-4819
卷号	186 期号:2 页码:335-341
期刊论文类型	Article
收录类别	SCI
WOS记录号	WOS:000254183700014
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.psych.ac.cn/handle/311026/5125
专题	中国科学院心理研究所回溯数据库(1956-2010)
通讯作者	X. Zhang
作者单位	1.Chinese Peoples Liberat Army Gen Hosp, Dept Geriatr Neurol, Beijing 100853, Peoples R China 2.Chinese Peoples Liberat Army Gen Hosp, Dept Radiol, Beijing 100853, Peoples R China 3.Chinese Acad Med Sci, Peking Union Med Coll Hosp, Dept Neurol, Beijing 100050, Peoples R China 4.Chinese Acad Sci, Inst Psychol, Lab Higher Brain Funct, Beijing 100101, Peoples R China 5.Capital Univ Med Sci, Xuanwu Hosp, Dept Neurol, Beijing 100053, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Xi,Ma, Lin,Li, Shunwei,et al. A mismatch process in brief delayed matching-to-sample task: an fMRI study[J]. EXPERIMENTAL BRAIN RESEARCH,2008,186(2):335-341.
APA	Zhang, Xi.,Ma, Lin.,Li, Shunwei.,Wang, Yuping.,Weng, Xuchu.,...&X. Zhang.(2008).A mismatch process in brief delayed matching-to-sample task: an fMRI study.EXPERIMENTAL BRAIN RESEARCH,186(2),335-341.
MLA	Zhang, Xi,et al."A mismatch process in brief delayed matching-to-sample task: an fMRI study".EXPERIMENTAL BRAIN RESEARCH 186.2(2008):335-341.

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