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  Parietal and early visual cortices encode working memory content across mental transformations

Christophel, T. B., Cichy, R. M., Hebart, M. N., & Haynes, J.-D. (2015). Parietal and early visual cortices encode working memory content across mental transformations. NeuroImage, 106, 198-206. doi:10.1016/j.neuroimage.2014.11.018.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-2155-6 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-2156-5
Genre: Journal Article

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 Creators:
Christophel, Thomas B.1, Author
Cichy, Radoslaw M.1, Author
Hebart, Martin N.1, Author              
Haynes, John-Dylan1, Author              
Affiliations:
1External Organizations, ou_persistent22              

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Free keywords: Short-term memory; Working memory; Mental rotation; fMRI; Multivariate analyses
 Abstract: Active and flexible manipulations of memory contents “in the mind's eye” are believed to occur in a dedicated neural workspace, frequently referred to as visual working memory. Such a neural workspace should have two important properties: The ability to store sensory information across delay periods and the ability to flexibly transform sensory information. Here we used a combination of functional MRI and multivariate decoding to indentify such neural representations. Subjects were required to memorize a complex artificial pattern for an extended delay, then rotate the mental image as instructed by a cue and memorize this transformed pattern. We found that patterns of brain activity already in early visual areas and posterior parietal cortex encode not only the initially remembered image, but also the transformed contents after mental rotation. Our results thus suggest that the flexible and general neural workspace supporting visual working memory can be realized within posterior brain regions.

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Language(s): eng - English
 Dates: 2014-11-092014-11-142015-02-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.neuroimage.2014.11.018
PMID: 25463456
Other: Epub 2014
 Degree: -

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Title: NeuroImage
Source Genre: Journal
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Publ. Info: Orlando, FL : Academic Press
Pages: - Volume / Issue: 106 Sequence Number: - Start / End Page: 198 - 206 Identifier: ISSN: 1053-8119
CoNE: https://pure.mpg.de/cone/journals/resource/954922650166