| Title: | Determinants of collective failure in excitable networks |
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| Authors: | ID Barać, Uroš (Author)
ID Perc, Matjaž (Author)
ID Gosak, Marko (Author) |
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| Files: |  RAZ_Barac_Uros_2023.pdf (6,87 MB)
MD5: 4F73E1AAB72B2529EF9E2BA71DCB650F
 https://doi.org/10.1063/5.0149578
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| Language: | English |
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| Work type: | Scientific work |
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| Typology: | 1.01 - Original Scientific Article |
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| Organization: | FNM - Faculty of Natural Sciences and Mathematics
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| Abstract: | We study collective failures in biologically realistic networks that consist of coupled excitable units. The networks have broad-scale degree distribution, high modularity, and small-world properties, while the excitable dynamics is determined by the paradigmatic FitzHugh–Nagumo model. We consider different coupling strengths, bifurcation distances, and various aging scenarios as potential culprits of collective failure. We find that for intermediate coupling strengths, the network remains globally active the longest if the high-degree nodes are first targets for inactivation. This agrees well with previously published results, which showed that oscillatory networks can be highly fragile to the targeted inactivation of low-degree nodes, especially under weak coupling. However, we also show that the most efficient strategy to enact collective failure does not only non-monotonically depend on the coupling strength, but it also depends on the distance from the bifurcation point to the oscillatory behavior of individual excitable units. Altogether, we provide a comprehensive account of determinants of collective failure in excitable networks, and we hope this will prove useful for better understanding breakdowns in systems that are subject to such dynamics. |
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| Keywords: | collective behavior, excitable media, complex network, neuronal dynamics |
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| Publication status: | Published |
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| Publication version: | Version of Record |
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| Submitted for review: | 07.03.2023 |
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| Article acceptance date: | 27.03.2023 |
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| Publication date: | 12.04.2023 |
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| Publisher: | American Institute of Physics |
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| Year of publishing: | 2023 |
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| Number of pages: | Str. 1-9 |
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| Numbering: | Letn. 33, Št. 4, št. članka 043120 |
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| PID: | 20.500.12556/DKUM-88144  |
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| UDC: | 53 |
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| ISSN on article: | 1054-1500 |
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| COBISS.SI-ID: | 149413891 |
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| DOI: | 10.1063/5.0149578 |
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| Publication date in DKUM: | 10.06.2024 |
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| Views: | 338 |
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| Downloads: | 44 |
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| Metadata: |    |
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| Categories: | Misc.
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