Negatively Linking Connector Networks in Cognitive Control of Affective Pictures.

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 connector

SUBMITTER: Zhang W 

PROVIDER: S-EPMC6823191 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature