Matches in SemOpenAlex for { <https://semopenalex.org/work/W2969926992> ?p ?o ?g. }
- W2969926992 startingPage "743732" @default.
- W2969926992 abstract "The identification of community structure in graphs continues to attract great interest in several fields. Network neuroscience is particularly concerned with this problem considering the key roles communities play in brain processes and functionality. Most methods used for community detection in brain graphs are based on the maximization of a highly parameter-dependent modularity function. In practice, the parametrization of this function often obscures the physical meaning and hierarchical organization of the partitions of network nodes. In this work, we present a new method able to detect communities at different scales in a natural, unrestricted way. First, to obtain an estimation of the information flow in the network we release random walkers to freely move over it. The activity of the walkers is separated into oscillatory modes by using empirical mode decomposition. After grouping nodes by their co-occurrence at each time scale, the so-called k-modes clustering returns the desired partitions. Our algorithm was first tested on benchmark graphs with favorable performance. We used the method on brain networks, including the anatomical connectivity of the macaque and human brains and a model for the interactions between nodes. We found a repertoire of community structures in the anatomical and functional networks, with a clear link existing between these two. The observed partitions range from the evident division in two hemispheres -in which all processes are managed globally- to specialized communities seemingly given by physical proximity and shared function. Our results stimulate the research of hierarchical community organization in terms of temporal scales of information flow.nnHighlightsO_LIOscillatory modes of networks signals carry information on architectural rules.nC_LIO_LIMeaningful partitions of the brain network are found over different temporal scales.nC_LIO_LIThe multiscale organization of the brain responds to the function of its components.nC_LI" @default.
- W2969926992 created "2019-08-29" @default.
- W2969926992 creator A5001278128 @default.
- W2969926992 creator A5026674091 @default.
- W2969926992 creator A5052348263 @default.
- W2969926992 creator A5085844237 @default.
- W2969926992 date "2019-08-22" @default.
- W2969926992 modified "2023-09-26" @default.
- W2969926992 title "A method for multiscale community detection in brain networks" @default.
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