Capacity differences in working memory based on resting state brain networks

Herein, we compared the connectivity of resting-state networks between participants with high and low working memory capacity groups. Brain network connectivity was assessed under both resting and working memory task conditions. Task scans comprised dual-task (reading sentences while memorizing targ...

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Bibliographic Details
Published in:Scientific reports 2021-09, Vol.11 (1), p.19502-19502, Article 19502
Main Authors: Osaka, Mariko, Kaneda, Mizuki, Azuma, Miyuki, Yaoi, Ken, Shimokawa, Tetsuya, Osaka, Naoyuki
Format: Article
Language:English
Subjects:
631/378/1595/1636
631/378/2649/2150
Accuracy
Attention
Attention task
Brain - physiology
Brain Mapping
Cognition
Connectome
Cortex (cingulate)
Cortex (parietal)
Executive function
Humanities and Social Sciences
Humans
Magnetic Resonance Imaging - methods
Memory
Memory, Short-Term
Mental task performance
multidisciplinary
Neural networks
Neural Pathways
Psychomotor Performance
Reading
Rest
Science
Science (multidisciplinary)
Short term memory
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Summary:Herein, we compared the connectivity of resting-state networks between participants with high and low working memory capacity groups. Brain network connectivity was assessed under both resting and working memory task conditions. Task scans comprised dual-task (reading sentences while memorizing target words) and single-task (reading sentences) conditions. The low capacity group showed relatively stronger connectivity during resting-state in most brain regions, and the high capacity group showed a stronger connectivity between the medial prefrontal and posterior parietal cortices. During task performance, the dorsal attention and salience networks were relatively strongly connected in the high capacity group. In the comparison between dual- and single-task conditions, increased coupling between the anterior cingulate cortex and other attentional control-related areas were noted in the high capacity group. These findings suggest that working memory differences are related with network connectivity variations in attentional control-associated regions during both resting and task performance conditions.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-021-98848-2