{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T17:09:46Z","timestamp":1789664986714,"version":"4.0.1"},"reference-count":72,"publisher":"SAGE Publications","issue":"5-6","license":[{"start":{"date-parts":[[2024,2,27]],"date-time":"2024-02-27T00:00:00Z","timestamp":1708992000000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["Journal of Neurotrauma"],"published-print":{"date-parts":[[2024,3]]},"abstract":"<jats:p>\n                    Concussions present with a myriad of symptomatic and cognitive concerns; however, the relationship between these functional disruptions and the underlying changes in the brain are not yet well understood. Hubs, or brain regions that are connected to many different functional networks, may be specifically disrupted after concussion. Given the implications in concussion research, we quantified hub disruption within the default mode network (DMN) and between the DMN and other brain networks. We collected resting-state functional magnetic resonance imaging data from collegiate student-athletes (\n                    <jats:italic toggle=\"yes\">n<\/jats:italic>\n                    \u2009=\u200944) at three time points: baseline (before beginning their athletic season), acute post-injury (approximately 48h after a diagnosed concussion), and recovery (after starting return-to-play progression, but before returning to contact). We used self-reported symptoms and computerized cognitive assessments collected across similar time points to link these functional connectivity changes to clinical outcomes. Concussion resulted in increased connectivity between regions within the DMN compared with baseline and recovery, and this post-injury connectivity was more positively related to symptoms and more negatively related to visual memory performance compared with baseline and recovery. Further, concussion led to decreased connectivity between DMN hubs and visual network non-hubs relative to baseline and recovery, and this post-injury connectivity was more negatively related to somatic symptoms and more positively related to visual memory performance compared with baseline and recovery. Relationships between functional connectivity, symptoms, and cognition were not significantly different at baseline versus recovery. These results highlight a unique relationship between self-reported symptoms, visual memory performance, and acute functional connectivity changes involving DMN hubs after concussion in athletes. This may provide evidence for a disrupted balance of within- and between-network communication highlighting possible network inefficiencies after concussion. These results aid in our understanding of the pathophysiological disruptions after concussion and inform our understanding of the associations between disruptions in brain connectivity and specific clinical presentations acutely post-injury.\n                  <\/jats:p>","DOI":"10.1089\/neu.2023.0089","type":"journal-article","created":{"date-parts":[[2024,1,2]],"date-time":"2024-01-02T10:51:12Z","timestamp":1704192672000},"page":"571-586","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":8,"title":["Concussion-Related Disruptions to Hub Connectivity in the Default Mode Network Are Related to Symptoms and Cognition"],"prefix":"10.1177","volume":"41","author":[{"given":"Heather C.","family":"Bouchard","sequence":"first","affiliation":[{"name":"Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA."},{"name":"Department of Psychology, University of Nebraska-Lincoln, Lincoln, Nebraska, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kate L.","family":"Higgins","sequence":"additional","affiliation":[{"name":"Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA."},{"name":"Department of Athletics, University of Nebraska-Lincoln, Lincoln, Nebraska, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Grace K.","family":"Amadon","sequence":"additional","affiliation":[{"name":"Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA."},{"name":"Department of Neurosurgery, Medical College of Wisconsin, Milwaukee, Wisconsin, USA."}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Julia M.","family":"Laing-Young","sequence":"additional","affiliation":[{"name":"Center for Brain, Biology and Behavior, University of Nebraska-Lincoln, Lincoln, Nebraska, USA."},{"name":"Department of Psychology, University of Nebraska-Lincoln, Lincoln, 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