Validation of network communicability metrics for the analysis of brain structural networks.

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Serval ID
serval:BIB_9C56BE738BF5
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Validation of network communicability metrics for the analysis of brain structural networks.
Journal
Plos One
Author(s)
Andreotti J., Jann K., Melie-Garcia L., Giezendanner S., Abela E., Wiest R., Dierks T., Federspiel A.
ISSN
1932-6203 (Electronic)
ISSN-L
1932-6203
Publication state
Published
Issued date
2014
Volume
9
Number
12
Pages
e115503
Language
english
Notes
Publication types: Journal ArticlePublication Status: epublish
Abstract
Computational network analysis provides new methods to analyze the brain's structural organization based on diffusion imaging tractography data. Networks are characterized by global and local metrics that have recently given promising insights into diagnosis and the further understanding of psychiatric and neurologic disorders. Most of these metrics are based on the idea that information in a network flows along the shortest paths. In contrast to this notion, communicability is a broader measure of connectivity which assumes that information could flow along all possible paths between two nodes. In our work, the features of network metrics related to communicability were explored for the first time in the healthy structural brain network. In addition, the sensitivity of such metrics was analysed using simulated lesions to specific nodes and network connections. Results showed advantages of communicability over conventional metrics in detecting densely connected nodes as well as subsets of nodes vulnerable to lesions. In addition, communicability centrality was shown to be widely affected by the lesions and the changes were negatively correlated with the distance from lesion site. In summary, our analysis suggests that communicability metrics that may provide an insight into the integrative properties of the structural brain network and that these metrics may be useful for the analysis of brain networks in the presence of lesions. Nevertheless, the interpretation of communicability is not straightforward; hence these metrics should be used as a supplement to the more standard connectivity network metrics.
Pubmed
Web of science
Open Access
Yes
Create date
29/01/2015 21:22
Last modification date
20/08/2019 16:03
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