Efficiency at rest: Magnetoencephalographic resting-state connectivity and individual differences in verbal working memory

Journal article

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Publication Details

Author list: García-Pacios J
Publisher: Elsevier
Publication year: 2012
Volume number: 86
Issue number: 2
Start page: 160
End page: 167
Number of pages: 8
ISSN: 0167-8760
Languages: English-Great Britain (EN-GB)


Inter-individual differences in cognitive performance are based on an
efficient use of task-related brain resources. However, little is known
yet on how these differences might be reflected on resting-state brain
networks. Here we used Magnetoencephalography resting-state recordings
to assess the relationship between a behavioral measurement of verbal
working memory and functional connectivity as measured through Mutual
Information. We studied theta (4-8. Hz), low alpha (8-10. Hz), high
alpha (10-13. Hz), low beta (13-18. Hz) and high beta (18-30. Hz)
frequency bands. A higher verbal working memory capacity was associated
with a lower mutual information in the low alpha band, prominently among
right-anterior and left-lateral sensors. The results suggest that an
efficient brain organization in the domain of verbal working memory
might be related to a lower resting-state functional connectivity across
large-scale brain networks possibly involving right prefrontal and left
perisylvian areas.


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Last updated on 2019-13-08 at 00:45