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  The representational dynamics of task and object processing in humans

Hebart, M. N., Bankson, B. B., Harel, A., Baker, C. I., & Cichy, R. M. (2018). The representational dynamics of task and object processing in humans. eLife, 7: e32816. doi:10.7554/eLife.32816.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-20B8-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0005-5866-6
Genre: Journal Article

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 Creators:
Hebart, Martin N.1, Author              
Bankson, Brett B.1, Author
Harel, Assaf 1, Author
Baker, Chris I.1, Author
Cichy, Radoslaw M.1, Author
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1External Organizations, ou_persistent22              

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Free keywords: MEG; MEG-fMRI fusion; fMRI; human; multivariate analysis; neuroscience; object processing; task context
 Abstract: Despite the importance of an observer’s goals in determining how a visual object is categorized, surprisingly little is known about how humans process the task context in which objects occur and how it may interact with the processing of objects. Using magnetoencephalography (MEG), functional magnetic resonance imaging (fMRI) and multivariate techniques, we studied the spatial and temporal dynamics of task and object processing. Our results reveal a sequence of separate but overlapping task-related processes spread across frontoparietal and occipitotemporal cortex. Task exhibited late effects on object processing by selectively enhancing task-relevant object features, with limited impact on the overall pattern of object representations. Combining MEG and fMRI data, we reveal a parallel rise in task-related signals throughout the cerebral cortex, with an increasing dominance of task over object representations from early to higher visual areas. Collectively, our results reveal the complex dynamics underlying task and object representations throughout human cortex.

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Language(s): eng - English
 Dates: 2017-10-142018-01-302018-01-31
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.7554/eLife.32816
PMID: 29384473
PMC: PMC5811210
PII: e32816
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Project name : -
Grant ID : ZIA-MH-002909
Funding program : Intramural Research Program
Funding organization : National Institutes of Mental Health (NIMH)
Project name : -
Grant ID : CI241-1/1
Funding program : Emmy Noether Grant
Funding organization : Deutsche Forschungsgemeinschaft (DFG)
Project name : -
Grant ID : -
Funding program : Feodor-Lynen Fellowship
Funding organization : Alexander von Humboldt Foundation
Project name : -
Grant ID : 93-M-0170
Funding program : Clinical Study Protocol
Funding organization : National Institute of Mental Health (NIMH)

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Title: eLife
Source Genre: Journal
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Publ. Info: Cambridge : eLife Sciences Publications
Pages: - Volume / Issue: 7 Sequence Number: e32816 Start / End Page: - Identifier: ISSN: 2050-084X
CoNE: https://pure.mpg.de/cone/journals/resource/2050-084X