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Sustained activity within the default mode network during an implicit memory task
Yang, Jionjiong1; Weng, Xuchu2; Zang, Yufeng3; Xu, Mingwei2; Xu, Xiaohong1; Jiongjiong Yang
2010-03-01
Source PublicationCORTEX
Correspondent Emailyangjj@pku.edu.cn
ISSN0010-9452
SubtypeArticle
Volume46Issue:3Pages:354-366
Contribution Rank2
AbstractRecent neuroimaging studies have shown that several brain regions - namely, the posterior cingulate cortex (PCC), ventral medial prefrontal cortex (vmPFC), and the bilateral angular gyrus - are more active during resting states than during cognitive tasks (i.e., default mode network). Although there is evidence showing that the default mode network is associated with unconscious state, it is unclear whether this network is associated with unconscious processing when normal human subjects perform tasks without awareness. We manipulated the level of conscious processing in normal subjects by asking them to perform an implicit and an explicit memory task, and analyzed signal changes in the default mode network for the stimuli versus baseline in both tasks. The functional magnetic resonance imaging (fMRI) analysis showed that the level of activation in regions within this network during the implicit task was not significantly different from that during the baseline, except in the left angular gyrus and the insula. There was strong deactivation for the explicit task when compared with the implicit task in the default mode regions, except in the left angular gyrus and the left middle temporal gyrus. These data suggest that the activity in the default network is sustained and less disrupted when an implicit memory task is performed, but is suspended when explicit retrieval is required. These results provide evidence that the default mode network is associated with unconscious processing when human subjects perform an implicit memory task. (c) 2009 Elsevier Srl. All rights reserved.
KeywordDefault mode network Unconscious processing Implicit memory
Subject Area认知心理学
Indexed BySCI
Language英语
WOS IDWOS:000275146500009
Citation statistics
Document Type期刊论文
Identifierhttp://ir.psych.ac.cn/handle/311026/13752
Collection中国科学院心理研究所回溯数据库(1956-2010)
Corresponding AuthorJiongjiong Yang
Affiliation1.Peking Univ, Dept Psychol, Beijing 100871, Peoples R China
2.Chinese Acad Sci, Inst Psychol, Lab Higher Brain Funct, Beijing 100101, Peoples R China
3.Beijing Normal Univ, State Key Lab Cognit Neurosci & Learning, Beijing 100875, Peoples R China
Recommended Citation
GB/T 7714
Yang, Jionjiong,Weng, Xuchu,Zang, Yufeng,et al. Sustained activity within the default mode network during an implicit memory task[J]. CORTEX,2010,46(3):354-366.
APA Yang, Jionjiong,Weng, Xuchu,Zang, Yufeng,Xu, Mingwei,Xu, Xiaohong,&Jiongjiong Yang.(2010).Sustained activity within the default mode network during an implicit memory task.CORTEX,46(3),354-366.
MLA Yang, Jionjiong,et al."Sustained activity within the default mode network during an implicit memory task".CORTEX 46.3(2010):354-366.
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