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Published in: Brain Structure and Function 2/2022

Open Access 01-03-2022 | Original Article

Fronto-parietal homotopy in resting-state functional connectivity predicts task-switching performance

Authors: Antonino Vallesi, Antonino Visalli, Zeus Gracia-Tabuenca, Vincenza Tarantino, Mariagrazia Capizzi, Sarael Alcauter, Dante Mantini, Lorenzo Pini

Published in: Brain Structure and Function | Issue 2/2022

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Abstract

Homotopic functional connectivity reflects the degree of synchrony in spontaneous activity between homologous voxels in the two hemispheres. Previous studies have associated increased brain homotopy and decreased white matter integrity with performance decrements on different cognitive tasks across the life-span. Here, we correlated functional homotopy, both at the whole-brain level and specifically in fronto-parietal network nodes, with task-switching performance in young adults. Cue-to-target intervals (CTI: 300 vs. 1200 ms) were manipulated on a trial-by-trial basis to modulate cognitive demands and strategic control. We found that mixing costs, a measure of task-set maintenance and monitoring, were significantly correlated to homotopy in different nodes of the fronto-parietal network depending on CTI. In particular, mixing costs for short CTI trials were smaller with lower homotopy in the superior frontal gyrus, whereas mixing costs for long CTI trials were smaller with lower homotopy in the supramarginal gyrus. These results were specific to the fronto-parietal network, as similar voxel-wise analyses within a control language network did not yield significant correlations with behavior. These findings extend previous literature on the relationship between homotopy and cognitive performance to task-switching, and show a dissociable role of homotopy in different fronto-parietal nodes depending on task demands.
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Metadata
Title
Fronto-parietal homotopy in resting-state functional connectivity predicts task-switching performance
Authors
Antonino Vallesi
Antonino Visalli
Zeus Gracia-Tabuenca
Vincenza Tarantino
Mariagrazia Capizzi
Sarael Alcauter
Dante Mantini
Lorenzo Pini
Publication date
01-03-2022
Publisher
Springer Berlin Heidelberg
Published in
Brain Structure and Function / Issue 2/2022
Print ISSN: 1863-2653
Electronic ISSN: 1863-2661
DOI
https://doi.org/10.1007/s00429-021-02312-w

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