Age-preserved semantic memory and the CRUNCH effect manifested as differential semantic control networks: An fMRI study.

Semantic memory representations are overall well-maintained in aging whereas semantic control is thought to be more affected. To explain this phenomenon, this study aims to test the predictions of the Compensation Related Utilization of Neural Circuits Hypothesis (CRUNCH) focusing on task demands in...

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Autores principales:	Niobe Haitas, Mahnoush Amiri, Maximiliano Wilson, Yves Joanette, Jason Steffener
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9d0930142f7746b1af86af1b4527a450
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id	oai:doaj.org-article:9d0930142f7746b1af86af1b4527a450
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spelling	oai:doaj.org-article:9d0930142f7746b1af86af1b4527a4502021-12-02T20:10:40ZAge-preserved semantic memory and the CRUNCH effect manifested as differential semantic control networks: An fMRI study.1932-620310.1371/journal.pone.0249948https://doaj.org/article/9d0930142f7746b1af86af1b4527a4502021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0249948https://doaj.org/toc/1932-6203Semantic memory representations are overall well-maintained in aging whereas semantic control is thought to be more affected. To explain this phenomenon, this study aims to test the predictions of the Compensation Related Utilization of Neural Circuits Hypothesis (CRUNCH) focusing on task demands in aging as a possible framework. The CRUNCH effect would manifest itself in semantic tasks through a compensatory increase in neural activation in semantic control network regions but only up to a certain threshold of task demands. This study will compare 40 young (20-35 years old) with 40 older participants (60-75 years old) in a triad-based semantic judgment task performed in an fMRI scanner while manipulating levels of task demands (low vs. high) through semantic distance. In line with the CRUNCH predictions, differences in neurofunctional activation and behavioral performance (accuracy and response times) are expected in young vs. old participants in the low- vs. high-demand conditions manifested in semantic control Regions of Interest.Niobe HaitasMahnoush AmiriMaximiliano WilsonYves JoanetteJason SteffenerPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 6, p e0249948 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Niobe Haitas Mahnoush Amiri Maximiliano Wilson Yves Joanette Jason Steffener Age-preserved semantic memory and the CRUNCH effect manifested as differential semantic control networks: An fMRI study.
description	Semantic memory representations are overall well-maintained in aging whereas semantic control is thought to be more affected. To explain this phenomenon, this study aims to test the predictions of the Compensation Related Utilization of Neural Circuits Hypothesis (CRUNCH) focusing on task demands in aging as a possible framework. The CRUNCH effect would manifest itself in semantic tasks through a compensatory increase in neural activation in semantic control network regions but only up to a certain threshold of task demands. This study will compare 40 young (20-35 years old) with 40 older participants (60-75 years old) in a triad-based semantic judgment task performed in an fMRI scanner while manipulating levels of task demands (low vs. high) through semantic distance. In line with the CRUNCH predictions, differences in neurofunctional activation and behavioral performance (accuracy and response times) are expected in young vs. old participants in the low- vs. high-demand conditions manifested in semantic control Regions of Interest.
format	article
author	Niobe Haitas Mahnoush Amiri Maximiliano Wilson Yves Joanette Jason Steffener
author_facet	Niobe Haitas Mahnoush Amiri Maximiliano Wilson Yves Joanette Jason Steffener
author_sort	Niobe Haitas
title	Age-preserved semantic memory and the CRUNCH effect manifested as differential semantic control networks: An fMRI study.
title_short	Age-preserved semantic memory and the CRUNCH effect manifested as differential semantic control networks: An fMRI study.
title_full	Age-preserved semantic memory and the CRUNCH effect manifested as differential semantic control networks: An fMRI study.
title_fullStr	Age-preserved semantic memory and the CRUNCH effect manifested as differential semantic control networks: An fMRI study.
title_full_unstemmed	Age-preserved semantic memory and the CRUNCH effect manifested as differential semantic control networks: An fMRI study.
title_sort	age-preserved semantic memory and the crunch effect manifested as differential semantic control networks: an fmri study.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/9d0930142f7746b1af86af1b4527a450
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Age-preserved semantic memory and the CRUNCH effect manifested as differential semantic control networks: An fMRI study.

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