{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,18]],"date-time":"2026-08-18T04:34:29Z","timestamp":1787027669890,"version":"build-2736575974"},"reference-count":22,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2026,3,29]],"date-time":"2026-03-29T00:00:00Z","timestamp":1774742400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Army Applied SBIR","award":["W51701-23-C-0269"],"award-info":[{"award-number":["W51701-23-C-0269"]}]},{"name":"Air Force Research Laboratory SBIR","award":["FA864925P0252"],"award-info":[{"award-number":["FA864925P0252"]}]},{"award":["FA864925P0252"],"award-info":[{"award-number":["FA864925P0252"]}],"id":[{"id":"https:\/\/ror.org\/0584m4844","id-type":"ROR","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Brain Sciences"],"abstract":"<jats:p>Background\/Objectives: Due to their positions, professional baseball catchers are at elevated risk of concussion, which can impair visual processing. There is a need for sensitive sensorimotor monitoring tools to track concussion-related neurophysiological changes more accurately. We investigated whether oculometrics can address this need. Methods: Four Major League Baseball catchers completed an oculometric assessment shortly after suffering a concussion (Time 1) and again after completing vision rehabilitation (Time 2). The assessment produces 10 z-scored measures, including a summary score. Results: Players\u2019 Time 1 summary score tended to be typical of a normal healthy adult (Mean = 0.07 z-scored units). On average, players improved by 1.3 z-score units from their Time 1 summary score (SD = 1.07). Exploratory analyses revealed that sensorimotor recovery was driven by smooth pursuit latency, proportion of tracking comprising smooth pursuit, and the amplitude of catch-up saccades. Conclusions: Our analysis was based on a very small sample of concussion cases, each of which was unique. Despite this limitation, our data show how oculometrics can measure improvements in visual processing following a concussion among baseball players with exceptional perceptual-motor skills. Our data highlight the risk that brain injuries in high-performing individuals go undetected due to standard-of-care tools normed to behavior from healthy control populations; for these athletes, \u201cnormal\u201d scores cannot be interpreted as neurologically \u201chealthy\u201d.<\/jats:p>","DOI":"10.3390\/brainsci16040369","type":"journal-article","created":{"date-parts":[[2026,3,30]],"date-time":"2026-03-30T12:11:44Z","timestamp":1774872704000},"page":"369","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Oculometric Measurement of Concussion Magnitude in Professional Baseball Catchers"],"prefix":"10.3390","volume":"16","author":[{"given":"Richard","family":"Baird","sequence":"first","affiliation":[{"name":"United States Air Force Academy, Colorado Springs, CO 80840, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ryan","family":"Harrison","sequence":"additional","affiliation":[{"name":"Slow The Game Down, Laguna Beach, CA 92651, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-7104-476X","authenticated-orcid":false,"given":"Quinn","family":"Kennedy","sequence":"additional","affiliation":[{"name":"neuroFit, Inc., Mountain View, CA 94040, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mollie","family":"McGuire","sequence":"additional","affiliation":[{"name":"Naval Postgraduate School, Monterey, CA 93943, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8215-3024","authenticated-orcid":false,"given":"Dorion","family":"Liston","sequence":"additional","affiliation":[{"name":"neuroFit, Inc., Mountain View, CA 94040, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,3,29]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"476","DOI":"10.1016\/S0002-9394(14)72106-3","article-title":"The visual function of professional baseball players","volume":"122","author":"Laby","year":"1996","journal-title":"Am. J. Ophthalmol."},{"key":"ref_2","unstructured":"Adair, R.K. (2002). The Physics of Baseball, Perennial. [3rd ed.]."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"221","DOI":"10.3233\/VES-190678","article-title":"Gaze stability in the elite athlete: A normative observational study","volume":"29","author":"Massingale","year":"2019","journal-title":"J. Vestib. Res."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"113397","DOI":"10.1016\/j.physbeh.2021.113397","article-title":"Properties of fast vergence eye movements and horizontal saccades in athletes","volume":"235","author":"Yoshimura","year":"2021","journal-title":"Physiol. Behav."},{"key":"ref_5","doi-asserted-by":"crossref","unstructured":"Filippini, T., Kittelson, A., Wagner, A., Moody, V., Schubert, M., and Loyd, B. (2025). Professional baseball players demonstrate superior dynamic visual acuity and differences in vestibulo-ocular reflex performance, compared to similarly aged healthy controls. BMC Sports Sci. Med. Rehabil., 18.","DOI":"10.1186\/s13102-025-01405-x"},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1167\/jov.21.3.3","article-title":"Visuomotor predictors of batting performance in baseball players","volume":"21","author":"Chen","year":"2021","journal-title":"J. Vis."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"319","DOI":"10.1249\/MSS.0b013e31826fec97","article-title":"Dynamic visual acuity in baseball players is due to superior tracking abilities","volume":"45","author":"Uchida","year":"2013","journal-title":"Med. Sci. Sports Exerc."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"171","DOI":"10.1080\/02640414.2017.1288296","article-title":"Visual abilities distinguish pitchers from hitters in professional baseball","volume":"36","author":"Klemish","year":"2018","journal-title":"J. Sports Sci."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"2325967120913020","DOI":"10.1177\/2325967120913020","article-title":"Concussion Incidence and Impact on Player Performance in Major League Baseball Players Before and After a Standardized Concussion Protocol","volume":"8","author":"Peterson","year":"2020","journal-title":"Orthop. J. Sports Med."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"253","DOI":"10.2147\/OAJSM.S157433","article-title":"Concussion rates and effects on player performance in Major League Baseball players","volume":"9","author":"Sabesan","year":"2018","journal-title":"Open Access J. Sports Med."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"30","DOI":"10.1007\/s00221-024-06981-x","article-title":"Long-term effects of concussion on attention, sensory gating and motor learning","volume":"243","author":"Dolman","year":"2024","journal-title":"Exp. Brain Res."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"707","DOI":"10.3171\/2014.10.JNS14762","article-title":"Detection of third and sixth cranial nerve palsies with a novel method for eye tracking while watching a short film clip","volume":"122","author":"Samadani","year":"2015","journal-title":"J. Neurosurg."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"154","DOI":"10.1016\/j.jshs.2020.11.005","article-title":"Impaired motor control after sport-related concussion could increase risk for musculoskeletal injury: Implications for clinical management and rehabilitation","volume":"10","author":"Chmielewski","year":"2021","journal-title":"J. Sport. Health Sci."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"2385","DOI":"10.1249\/MSS.0000000000001372","article-title":"Self-reported Concussion History and Sensorimotor Tests Predict Head\/Neck Injuries","volume":"49","author":"Hides","year":"2017","journal-title":"Med. Sci. Sports Exerc."},{"key":"ref_15","doi-asserted-by":"crossref","unstructured":"Wilkerson, G.B., Nabhan, D.C., and Perry, T.S. (2021). A Novel Approach to Assessment of Perceptual-Motor Efficiency and Training-Induced Improvement in the Performance Capabilities of Elite Athletes. Front. Sports Act. Living, 3.","DOI":"10.3389\/fspor.2021.729729"},{"key":"ref_16","first-page":"503","article-title":"Perception and eye movements","volume":"Volume 7","author":"Squire","year":"2009","journal-title":"Encyclopedia of Neuroscience"},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1097\/OPX.0000000000000918","article-title":"Oculometric assessment of sensorimotor impairment associated with TBI","volume":"94","author":"Liston","year":"2017","journal-title":"Optom. Vis. Sci. Off. Publ. Am. Acad. Optom."},{"key":"ref_18","unstructured":"Wagner, C.M. (2017). Oculometric Screening for Traumatic Brain Injury in Veterans. [Master\u2019s Thesis, Naval Postgraduate School]."},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"12","DOI":"10.1167\/14.14.12","article-title":"Oculometric assessment of dynamic visual processing","volume":"14","author":"Liston","year":"2014","journal-title":"J. Vis."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"326","DOI":"10.1113\/jphysiol.1961.sp006811","article-title":"The relationship between saccadic and smooth tracking eye movements","volume":"159","author":"Rashbass","year":"1961","journal-title":"J. Physiol."},{"key":"ref_21","first-page":"116","article-title":"Variability and development of a normative data base for saccadic eye movements","volume":"21","author":"Bahill","year":"1981","journal-title":"Investig. Ophthalmol. Vis. Sci."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"706","DOI":"10.12965\/jer.1836416.208","article-title":"The effects of vision training, neck musculature strength, and reaction time on concussions in an athletic population","volume":"14","author":"Honda","year":"2018","journal-title":"J. Exerc. Rehabil."}],"container-title":["Brain Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2076-3425\/16\/4\/369\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,4,1]],"date-time":"2026-04-01T16:09:49Z","timestamp":1775059789000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2076-3425\/16\/4\/369"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,3,29]]},"references-count":22,"journal-issue":{"issue":"4","published-online":{"date-parts":[[2026,4]]}},"alternative-id":["brainsci16040369"],"URL":"https:\/\/doi.org\/10.3390\/brainsci16040369","relation":{},"ISSN":["2076-3425"],"issn-type":[{"value":"2076-3425","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,3,29]]}}}