A mismatch process in brief delayed matching-to-sample task: an fMRI study
Zhang, Xi1; Ma, Lin2; Li, Shunwei3; Wang, Yuping5; Weng, Xuchu4; Wang, Luning1; X. Zhang
2008-03-01
发表期刊EXPERIMENTAL BRAIN RESEARCH
ISSN0014-4819
文章类型Article
卷号186期号:2页码:335-341
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
收录类别SCI
语种英语
WOS记录号WOS:000254183700014
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被引频次:19[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
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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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