{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,25]],"date-time":"2026-06-25T15:36:01Z","timestamp":1782401761558,"version":"3.54.5"},"reference-count":26,"publisher":"Aldus Press","issue":"1","funder":[{"name":"University of Michigan Exercise & Sport Science Initiative"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Concussion"],"published-print":{"date-parts":[[2021,3]]},"abstract":"<jats:p> Aim: The underlying neurophysiological effects of concussion often result in attenuated cognitive and cortical function. To understand the relation between cognition and brain injury, we investigated the effects of concussion on attentional networks using functional near-infrared spectroscopy (fNIRS). Materials &amp; methods: Healthy controls and concussed patients, tested within 72\u00a0h\u00a0from injury (T1) and after symptoms resolved (T2) completed a computerized attention task during fNIRS imaging. Results: T1 patients exhibited slower reaction times and reduced brain activation pattern relative to healthy controls. Interestingly, the cortical oxygenation hemoglobin response at T2 was greater relative to T1 and healthy controls, while reaction time was normative. Conclusion: The exploratory findings of this study suggest once asymptomatic, a compensatory hemodynamic response may support the restoration of reaction time despite ongoing physiological recovery. <\/jats:p>","DOI":"10.2217\/cnc-2020-0014","type":"journal-article","created":{"date-parts":[[2020,10,28]],"date-time":"2020-10-28T10:00:05Z","timestamp":1603879205000},"source":"Crossref","is-referenced-by-count":4,"title":["Persistent alterations of cortical hemodynamic response in asymptomatic concussed patients"],"prefix":"10.63392","volume":"6","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-5923-1335","authenticated-orcid":false,"given":"Allyssa K","family":"Memmini","sequence":"first","affiliation":[{"name":"Michigan Concussion Center, University of Michigan, Ann Arbor, MI 48109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5500-0620","authenticated-orcid":false,"given":"Xin","family":"Sun","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of Michigan, Ann Arbor, MI 48109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1401-000X","authenticated-orcid":false,"family":"Xiaosu Hu","sequence":"additional","affiliation":[{"name":"School of Dentistry, Department of Biologic and\u00a0Materials Sciences & Prosthodontics, University of Michigan, Ann Arbor, MI 48109, USA"},{"name":"Center for Human Growth and\u00a0Development, University of Michigan, Ann Arbor, MI 48109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jessica","family":"Kim","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of Michigan, Ann Arbor, MI 48109, USA"},{"name":"Center for Human Growth and\u00a0Development, University of Michigan, Ann Arbor, MI 48109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9086-2004","authenticated-orcid":false,"given":"Noelle K","family":"Herzog","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of Toledo, Toledo, OH 43606, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mohammed N","family":"Islam","sequence":"additional","affiliation":[{"name":"Department of Electrical and Computer Engineering, University of Michigan, Ann Arbor, Michigan MI 48109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Daniel H","family":"Weissman","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of Michigan, Ann Arbor, MI 48109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexander J","family":"Rogers","sequence":"additional","affiliation":[{"name":"Michigan Concussion Center, University of Michigan, Ann Arbor, MI 48109, USA"},{"name":"Department of Emergency Medicine, Michigan Medicine, Ann Arbor, MI 48109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4287-6986","authenticated-orcid":false,"given":"Ioulia","family":"Kovelman","sequence":"additional","affiliation":[{"name":"Department of Psychology, University of Michigan, Ann Arbor, MI 48109, USA"},{"name":"Center for Human Growth and\u00a0Development, University of Michigan, Ann Arbor, MI 48109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2282-9325","authenticated-orcid":false,"given":"Steven P","family":"Broglio","sequence":"additional","affiliation":[{"name":"Michigan Concussion Center, University of Michigan, Ann Arbor, MI 48109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"52760","reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.1227\/NEU.0000000000000505"},{"issue":"3","key":"B2","first-page":"228","volume":"36","author":"Giza CC","year":"2001","journal-title":"J. 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