Abstract:
:The resting-state human brain networks underlie fundamental cognitive functions and consist of complex interactions among brain regions. However, the level of complexity of the resting-state networks has not been quantified, which has prevented comprehensive descriptions of the brain activity as an integrative system. Here, we address this issue by demonstrating that a pairwise maximum entropy model, which takes into account region-specific activity rates and pairwise interactions, can be robustly and accurately fitted to resting-state human brain activities obtained by functional magnetic resonance imaging. Furthermore, to validate the approximation of the resting-state networks by the pairwise maximum entropy model, we show that the functional interactions estimated by the pairwise maximum entropy model reflect anatomical connexions more accurately than the conventional functional connectivity method. These findings indicate that a relatively simple statistical model not only captures the structure of the resting-state networks but also provides a possible method to derive physiological information about various large-scale brain networks.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Watanabe T,Hirose S,Wada H,Imai Y,Machida T,Shirouzu I,Konishi S,Miyashita Y,Masuda Ndoi
10.1038/ncomms2388subject
Has Abstractpub_date
2013-01-01 00:00:00pages
1370issn
2041-1723pii
ncomms2388journal_volume
4pub_type
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