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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
Source PublicationEXPERIMENTAL BRAIN RESEARCH
ISSN0014-4819
SubtypeArticle
Volume186Issue:2Pages:335-341
AbstractOur 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.
Keyworddelayed matching-to-sample task functional magnetic resonance imaging (fMRI) mismatch anterior cingulate cortex dorsolateral prefrontal cortex
Subject Area认知神经科学
Indexed BySCI
Language英语
WOS IDWOS:000254183700014
Citation statistics
Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/5125
Collection中国科学院心理研究所回溯数据库(1956-2010)
Corresponding AuthorX. Zhang
Affiliation1.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
Recommended Citation
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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