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  Delineating self-referential processing from episodic memory retrieval: common and dissociable networks

Sajonz, B., Kahn, T., Margulies, D. S., Park, S., Wittmann, A., Stoy, M., et al. (2010). Delineating self-referential processing from episodic memory retrieval: common and dissociable networks. NeuroImage, 50(4), 1606-1617. doi:10.1016/j.neuroimage.2010.01.087.

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Sajonz, B1, Author
Kahn, T.1, Author
Margulies, Daniel S.1, Author           
Park, SQ1, Author
Wittmann, A1, Author
Stoy, M1, Author
Ströhle, A1, Author
Heinz, A.1, Author
Northoff, G.1, Author
Bermpohl, F1, Author
Affiliations:
1External Organizations, ou_persistent22              

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Free keywords: Functional magnetic resonance imaging; fMRI; Medial prefrontal cortex; Lateral parietal cortex; Precuneus; Posterior cingulate cortex
 Abstract: Self-referential processing involves a complex set of cognitive functions, posing challenges to delineating its independent neural correlates. While self-referential processing has been considered functionally intertwined with episodic memory, the present study explores their overlap and dissociability. Standard tasks for self-referential processing and episodic memory were combined into a single fMRI experiment. Contrasting the effects of self-relatedness and retrieval success allowed for the two processes to be delineated. Stimuli judged as self-referential specifically activated the posterior cingulate/anterior precuneus, the medial prefrontal cortex, and an inferior division of the inferior parietal lobule. In contrast, episodic memory retrieval specifically involved the posterior precuneus, the right anterior prefrontal cortex, and a superior division of the inferior parietal lobule (extending into superior parietal lobule). Overlapping activations were found in intermediate zones in the precuneus and the inferior parietal lobule, but not in the prefrontal cortex. While our data show common networks for both processes in the medial and lateral parietal cortex, three functional differentiations were also observed: (1) an anterior–posterior differentiation within the medial parietal cortex; (2) a medial–anterolateral differentiation within the prefrontal cortex; and, (3) an inferior–superior differentiation within the lateral parietal cortex for self-referential processing versus episodic memory retrieval.

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 Dates: 2010
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 512104
Other: P11627
DOI: 10.1016/j.neuroimage.2010.01.087
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Title: NeuroImage
Source Genre: Journal
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Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 50 (4) Sequence Number: - Start / End Page: 1606 - 1617 Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166