Task relevance modulates the cortical representation of feature conjunctions in the target template

Abstract Little is known about the cortical regions involved in representing task-related content in preparation for visual task performance. Here we used representational similarity analysis (RSA) to investigate the BOLD response pattern similarity between task relevant and task irrelevant feature...

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Autores principales:	Reshanne R. Reeder, Michael Hanke, Stefan Pollmann
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8d894d567518422aae564828efef1670
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id	oai:doaj.org-article:8d894d567518422aae564828efef1670
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spelling	oai:doaj.org-article:8d894d567518422aae564828efef16702021-12-02T11:52:17ZTask relevance modulates the cortical representation of feature conjunctions in the target template10.1038/s41598-017-04123-82045-2322https://doaj.org/article/8d894d567518422aae564828efef16702017-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04123-8https://doaj.org/toc/2045-2322Abstract Little is known about the cortical regions involved in representing task-related content in preparation for visual task performance. Here we used representational similarity analysis (RSA) to investigate the BOLD response pattern similarity between task relevant and task irrelevant feature dimensions during conjunction viewing and target template maintenance prior to visual search. Subjects were cued to search for a spatial frequency (SF) or orientation of a Gabor grating and we measured BOLD signal during cue and delay periods before the onset of a search display. RSA of delay period activity revealed that widespread regions in frontal, posterior parietal, and occipitotemporal cortices showed general representational differences between task relevant and task irrelevant dimensions (e.g., orientation vs. SF). In contrast, RSA of cue period activity revealed sensory-related representational differences between cue images (regardless of task) at the occipital pole and additionally in the frontal pole. Our data show that task and sensory information are represented differently during viewing and during target template maintenance, and that task relevance modulates the representation of visual information across the cortex.Reshanne R. ReederMichael HankeStefan PollmannNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-10 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Reshanne R. Reeder Michael Hanke Stefan Pollmann Task relevance modulates the cortical representation of feature conjunctions in the target template
description	Abstract Little is known about the cortical regions involved in representing task-related content in preparation for visual task performance. Here we used representational similarity analysis (RSA) to investigate the BOLD response pattern similarity between task relevant and task irrelevant feature dimensions during conjunction viewing and target template maintenance prior to visual search. Subjects were cued to search for a spatial frequency (SF) or orientation of a Gabor grating and we measured BOLD signal during cue and delay periods before the onset of a search display. RSA of delay period activity revealed that widespread regions in frontal, posterior parietal, and occipitotemporal cortices showed general representational differences between task relevant and task irrelevant dimensions (e.g., orientation vs. SF). In contrast, RSA of cue period activity revealed sensory-related representational differences between cue images (regardless of task) at the occipital pole and additionally in the frontal pole. Our data show that task and sensory information are represented differently during viewing and during target template maintenance, and that task relevance modulates the representation of visual information across the cortex.
format	article
author	Reshanne R. Reeder Michael Hanke Stefan Pollmann
author_facet	Reshanne R. Reeder Michael Hanke Stefan Pollmann
author_sort	Reshanne R. Reeder
title	Task relevance modulates the cortical representation of feature conjunctions in the target template
title_short	Task relevance modulates the cortical representation of feature conjunctions in the target template
title_full	Task relevance modulates the cortical representation of feature conjunctions in the target template
title_fullStr	Task relevance modulates the cortical representation of feature conjunctions in the target template
title_full_unstemmed	Task relevance modulates the cortical representation of feature conjunctions in the target template
title_sort	task relevance modulates the cortical representation of feature conjunctions in the target template
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/8d894d567518422aae564828efef1670
work_keys_str_mv	AT reshannerreeder taskrelevancemodulatesthecorticalrepresentationoffeatureconjunctionsinthetargettemplate AT michaelhanke taskrelevancemodulatesthecorticalrepresentationoffeatureconjunctionsinthetargettemplate AT stefanpollmann taskrelevancemodulatesthecorticalrepresentationoffeatureconjunctionsinthetargettemplate
_version_	1718395116135120896

Task relevance modulates the cortical representation of feature conjunctions in the target template

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