Abstract

Stability is a physical attribute that stands opposite the change. However, it is still unclear how the arrangement of links called topology affects network stability. In this study, we tackled this issue in the resting-state brain network using structural balance. Structural balance theory employs the quality of triadic associations between signed links to determine the network stability. In this study, we showed that negative links of the resting-state network make hubs to reduce balance-energy and push the network into a more stable state compared to null-networks with trivial topologies. In this regard, we created a global measure entitled ‘tendency to make hub’ to assess the hubness of the network. Besides, we revealed nodal degrees of negative links have an exponential distribution that confirms the existence of negative hubs. Our findings indicate that the arrangement of negative links plays an important role in the balance (stability) of the resting-state brain network.

Details

Title
Topological impact of negative links on the stability of resting-state brain network
Author
Saberi Majid 1 ; Khosrowabadi Reza 1 ; Khatibi, Ali 2 ; Misic Bratislav 3 ; Jafari Gholamreza 4 

 Shahid Beheshti University, G.C., Institute for Cognitive and Brain Sciences, Tehran, Iran (GRID:grid.411600.2) 
 University of Birmingham, Centre of Precision Rehabilitation for Spinal Pain (CPR Spine), School of Sport, Exercise and Rehabilitation Sciences, Birmingham, UK (GRID:grid.6572.6) (ISNI:0000 0004 1936 7486) 
 McGill University, McConnell Brain Imaging Centre, Montréal Neurological Institute, Montréal, Canada (GRID:grid.14709.3b) (ISNI:0000 0004 1936 8649) 
 Shahid Beheshti University, G.C., Institute for Cognitive and Brain Sciences, Tehran, Iran (GRID:grid.411600.2); Shahid Beheshti University, G.C., Physics Department, Tehran, Iran (GRID:grid.411600.2) 
Publication year
2021
Publication date
2021
Publisher
Nature Publishing Group
e-ISSN
20452322
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2480894569
Copyright
© The Author(s) 2021. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.