The conundrum of functional brain networks: Small-world efficiency or fractal modularity
The human brain has been studied at multiple scales, from neurons, circuits, areas with well-defined anatomical and functional boundaries, to large-scale functional networks which mediate coherent cognition. In a recent work, we addressed the problem of the hierarchical organization in the brain thr...
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paper:paper_1664042X_v3MAY_n_p_Gallos2023-06-08T16:25:56Z The conundrum of functional brain networks: Small-world efficiency or fractal modularity Sigman, Mariano Makse, Hernan Brain functional networks fMRI Fractal networks Modularity Percolation Small-world The human brain has been studied at multiple scales, from neurons, circuits, areas with well-defined anatomical and functional boundaries, to large-scale functional networks which mediate coherent cognition. In a recent work, we addressed the problem of the hierarchical organization in the brain through network analysis. Our analysis identified functional brain modules of fractal structure that were inter-connected in a small-world topology. Here, we provide more details on the use of network science tools to elaborate on this behavior. We indicate the importance of using percolation theory to highlight the modular character of the functional brain network. These modules present a fractal, self-similar topology, identified through fractal network methods. When we lower the threshold of correlations to include weaker ties, the network as a whole assumes a small-world character. These weak ties are organized precisely as predicted by theory maximizing information transfer with minimal wiring costs. © 2012 Gallos, Sigman and Makse. Fil:Sigman, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Makse, H.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1664042X_v3MAY_n_p_Gallos http://hdl.handle.net/20.500.12110/paper_1664042X_v3MAY_n_p_Gallos |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Brain functional networks fMRI Fractal networks Modularity Percolation Small-world |
spellingShingle |
Brain functional networks fMRI Fractal networks Modularity Percolation Small-world Sigman, Mariano Makse, Hernan The conundrum of functional brain networks: Small-world efficiency or fractal modularity |
topic_facet |
Brain functional networks fMRI Fractal networks Modularity Percolation Small-world |
description |
The human brain has been studied at multiple scales, from neurons, circuits, areas with well-defined anatomical and functional boundaries, to large-scale functional networks which mediate coherent cognition. In a recent work, we addressed the problem of the hierarchical organization in the brain through network analysis. Our analysis identified functional brain modules of fractal structure that were inter-connected in a small-world topology. Here, we provide more details on the use of network science tools to elaborate on this behavior. We indicate the importance of using percolation theory to highlight the modular character of the functional brain network. These modules present a fractal, self-similar topology, identified through fractal network methods. When we lower the threshold of correlations to include weaker ties, the network as a whole assumes a small-world character. These weak ties are organized precisely as predicted by theory maximizing information transfer with minimal wiring costs. © 2012 Gallos, Sigman and Makse. |
author |
Sigman, Mariano Makse, Hernan |
author_facet |
Sigman, Mariano Makse, Hernan |
author_sort |
Sigman, Mariano |
title |
The conundrum of functional brain networks: Small-world efficiency or fractal modularity |
title_short |
The conundrum of functional brain networks: Small-world efficiency or fractal modularity |
title_full |
The conundrum of functional brain networks: Small-world efficiency or fractal modularity |
title_fullStr |
The conundrum of functional brain networks: Small-world efficiency or fractal modularity |
title_full_unstemmed |
The conundrum of functional brain networks: Small-world efficiency or fractal modularity |
title_sort |
conundrum of functional brain networks: small-world efficiency or fractal modularity |
publishDate |
2012 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_1664042X_v3MAY_n_p_Gallos http://hdl.handle.net/20.500.12110/paper_1664042X_v3MAY_n_p_Gallos |
work_keys_str_mv |
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1768545391421161472 |