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In the current study, we utilized whole\u2010brain resting\u2010state functional connectivity data of healthy males (<jats:italic>n<\/jats:italic>\u2009=\u2009156) to identify a network of connections predictive of an individual's impulsivity, as assessed by the Barratt Impulsiveness Scale (BIS)\u201011. Our participants were selected, in part, based on their self\u2010reported BIS\u201011 impulsivity scores. Specifically, individuals who reported high or low trait impulsivity scores during screening were selected first, followed by those with intermediate impulsivity levels. This enabled us to include participants with rare, extreme scores and to cover the entire BIS\u201011 impulsivity spectrum. We employed repeated K\u2010fold cross\u2010validation for feature\u2010selection and used stratified 10\u2010fold cross\u2010validation to train and test our models. Our findings revealed a widespread neural network associated with trait impulsivity and a notable correlation between predicted and observed scores. Feature importance and node degree were assessed to highlight specific nodes and edges within the impulsivity network, revealing previously overlooked key brain regions, such as the cerebellum, brainstem, and temporal lobe, while supporting previous findings on the basal ganglia\u2010thalamo\u2010prefrontal network and the prefrontal\u2010motor strip network in relation to impulsiveness. This deepened understanding establishes a foundation for identifying alterations in functional brain networks associated with dysfunctional impulsivity.<\/jats:p>","DOI":"10.1002\/hbm.70059","type":"journal-article","created":{"date-parts":[[2024,10,29]],"date-time":"2024-10-29T10:06:58Z","timestamp":1730196418000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Functional Brain Network of Trait Impulsivity: Whole\u2010Brain Functional Connectivity Predicts Self\u2010Reported Impulsivity"],"prefix":"10.1002","volume":"45","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1504-7197","authenticated-orcid":false,"given":"Philippa","family":"H\u00fcpen","sequence":"first","affiliation":[{"name":"Department of Psychiatry, Psychotherapy and Psychosomatics, Faculty of Medicine RWTH Aachen  Aachen Germany"},{"name":"JARA \u2010 Translational Brain Medicine  Aachen 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