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The present study sought to identify RS abnormalities in male and female adolescents with mTBI (no previous Diagnostic and Statistical Manual of Mental Disorders \u2013 5th Edition diagnosis) identified from an outpatient specialty care concussion program setting as a basis for evaluating potential clinical utility. Visit 1 MEG RS data were obtained from 46 adolescents with mTBI (mean age: 15.4 years, 25 females) within 4 months of a mTBI (mTBI acute to subacute period) as well as from 34 typically developing (TD) controls (mean age: 14.8 years; 17 females) identified from the local community. Visit 2 RS data (follow-up \u223c4.3 months after Visit 1; mTBI subchronic period) were obtained from 36 mTBI (19 females) and 29 TD (14 females) of those participants. Source-space RS neural activity was examined from 4 to 56 Hz. Visit 1\n                    <jats:italic toggle=\"yes\">t<\/jats:italic>\n                    -tests showed that group differences were largest in the beta range (16\u201330 Hz; mTBI &lt; TD), with whole-brain linear mixed model (LMM) analyses examining beta-band group differences as a function of Visit. A main effect of Group indicated Visits 1 and 2 beta-band group differences in midline superior frontal gyrus, right temporal pole, and right central sulcus (all mTBI &lt; TD). The group effects were large (Cohen\u2019s\n                    <jats:italic toggle=\"yes\">d<\/jats:italic>\n                    values 0.75 to 1.31). Of clinical significance in the mTBI group, a decrease in mTBI symptoms from Visit 1 to 2 was associated with an increase in beta power in 4 other brain regions. Present findings suggest that RS beta power has potential as a measure and perhaps as a mechanism of clinical recovery in adolescents with mTBI.\n                  <\/jats:p>","DOI":"10.1177\/08977151251383542","type":"journal-article","created":{"date-parts":[[2025,10,23]],"date-time":"2025-10-23T19:46:17Z","timestamp":1761248777000},"page":"209-223","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":1,"title":["Regionally Specific Resting-State Beta Neural Power Predicts Brain Injury and Symptom Recovery in Adolescents with Concussion: A Longitudinal Study"],"prefix":"10.1177","volume":"43","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-6731-5443","authenticated-orcid":false,"given":"J. 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