Abstract:
:Cognitive control of emotions depends on intermodular long-distance communications. However, negative connections between connector hubs are removed by traditional hard-thresholding approach in graph-theoretical research. Using soft-thresholding approach to reserve negative links, we explore time-varying features of connector hubs in intermodular communications during cognitive control of affective pictures. We develop a novel approach to sparse functional networks and construct negatively linking connector networks for positive, negative, and neutral pictures. We find that consisting of flexible hubs, the frontoparietal system dynamically top-down inhibits neural activities through negative connections from the salience subnetwork and visual processing area. Moreover, the shared connectors form functional backbones that dynamically reconfigure according to differently-valenced pictures in order to coordinate both stability and flexibility of cognitive connector networks. These results reveal the necessity of conserving negative links between intermodular communications in chronnectome research and deepen the understanding of how connector networks dynamically evolute during cognitive control of affective processing.
journal_name
Front Neuroscijournal_title
Frontiers in neuroscienceauthors
Zhang W,Chen J,Ren G,Tang F,Liu Q,Li Hdoi
10.3389/fnins.2019.01069subject
Has Abstractpub_date
2019-10-25 00:00:00pages
1069eissn
1662-4548issn
1662-453Xjournal_volume
13pub_type
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