Abstract:
:An emerging field of research focused on fluctuations in brain signals has provided evidence that the complexity of those signals, as measured by entropy, conveys important information about network dynamics (e.g., local and distributed processing). While much research has focused on how neural complexity differs in populations with different age groups or clinical disorders, substantially less research has focused on the basic understanding of neural complexity in populations with young and healthy brain states. The present study used resting-state fMRI data from the Human Connectome Project (Van Essen et al., 2013) to test the extent that neural complexity in the BOLD signal, as measured by multiscale entropy (1) would differ from random noise, (2) would differ between four major resting-state networks previously associated with higher-order cognition, and (3) would be associated with the strength and extent of functional connectivity-a complementary method of estimating information processing. We found that complexity in the BOLD signal exhibited different patterns of complexity from white, pink, and red noise and that neural complexity was differentially expressed between resting-state networks, including the default mode, cingulo-opercular, left and right frontoparietal networks. Lastly, neural complexity across all networks was negatively associated with functional connectivity at fine scales, but was positively associated with functional connectivity at coarse scales. The present study is the first to characterize neural complexity in BOLD signals at a high temporal resolution and across different networks and might help clarify the inconsistencies between neural complexity and functional connectivity, thus informing the mechanisms underlying neural complexity.
journal_name
Front Hum Neuroscijournal_title
Frontiers in human neuroscienceauthors
McDonough IM,Nashiro Kdoi
10.3389/fnhum.2014.00409subject
Has Abstractpub_date
2014-06-10 00:00:00pages
409issn
1662-5161journal_volume
8pub_type
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pub_type: 杂志文章,评审
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journal_title:Frontiers in human neuroscience
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journal_title:Frontiers in human neuroscience
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journal_title:Frontiers in human neuroscience
pub_type: 杂志文章,评审
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journal_title:Frontiers in human neuroscience
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pub_type: 杂志文章,评审
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journal_title:Frontiers in human neuroscience
pub_type: 杂志文章
doi:10.3389/fnhum.2013.00798
更新日期:2013-11-22 00:00:00
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doi:10.3389/fnhum.2017.00213
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journal_title:Frontiers in human neuroscience
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