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The effect of task demands on the neural patterns generated by novel instruction encoding

View ORCID ProfileAlberto Sobrado, Ana F. Palenciano, View ORCID ProfileCarlos González-García, View ORCID ProfileMaría Ruz
doi: https://doi.org/10.1101/2021.03.08.434338
Alberto Sobrado
aMind, Brain and Behavior Research Center, University of Granada, Spain
bDepartment of Experimental Psychology, University of Granada, Spain
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Ana F. Palenciano
cDepartment of Experimental Psychology, Ghent University, Belgium
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Carlos González-García
cDepartment of Experimental Psychology, Ghent University, Belgium
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María Ruz
aMind, Brain and Behavior Research Center, University of Granada, Spain
bDepartment of Experimental Psychology, University of Granada, Spain
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  • For correspondence: mruz@ugr.es
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Abstract

Verbal instructions allow fast and optimal implementation of novel behaviors. Previous research has shown that different control-related variables organize neural activity in frontoparietal regions during the preparation of novel instructed task sets. Little is known, however, about how such variables organize brain activity under different task demands. In this study, we assessed the impact of implementation and memorization demands in the neural representation of novel instructions. We combined functional Magnetic Resonance Imaging (fMRI) with an instruction-following paradigm to compare the effect of three relevant control-related variables (integration of dimensions, response complexity, and stimulus category) across demands, and to explore the degree of overlap between these. Our results reveal, first, that the implementation and memorization of novel instructions share common neural patterns in several brain regions. Importantly, they also suggest that the preparation to implement instructions results in a strengthened coding of relevant control-related information in frontoparietal areas compared to their mere memorization. Overall, our study shows how the content of novel instructions proactively shapes brain activity based on multiple dimensions and how these organizational patterns are strengthened during implementation demands.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted March 09, 2021.
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The effect of task demands on the neural patterns generated by novel instruction encoding
Alberto Sobrado, Ana F. Palenciano, Carlos González-García, María Ruz
bioRxiv 2021.03.08.434338; doi: https://doi.org/10.1101/2021.03.08.434338
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The effect of task demands on the neural patterns generated by novel instruction encoding
Alberto Sobrado, Ana F. Palenciano, Carlos González-García, María Ruz
bioRxiv 2021.03.08.434338; doi: https://doi.org/10.1101/2021.03.08.434338

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