{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,11]],"date-time":"2026-06-11T00:23:16Z","timestamp":1781137396958,"version":"3.54.1"},"reference-count":62,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2021,11,27]],"date-time":"2021-11-27T00:00:00Z","timestamp":1637971200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Brain Sciences"],"abstract":"<jats:p>(1) Background: The King-Devick (KD) rapid number naming test is sensitive for concussion diagnosis, with increased test time from baseline as the outcome measure. Eye tracking during KD performance in concussed individuals shows an association between inter-saccadic interval (ISI) (the time between saccades) prolongation and prolonged testing time. This pilot study retrospectively assesses the relation between ISI prolongation during KD testing and cognitive performance in persistently-symptomatic individuals post-concussion. (2) Results: Fourteen participants (median age 34 years; 6 women) with prior neuropsychological assessment and KD testing with eye tracking were included. KD test times (72.6 \u00b1 20.7 s) and median ISI (379.1 \u00b1 199.1 msec) were prolonged compared to published normative values. Greater ISI prolongation was associated with lower scores for processing speed (WAIS-IV Coding, r = 0.72, p = 0.0017), attention\/working memory (Trails Making A, r = \u22120.65, p = 0.006) (Digit Span Forward, r = 0.57, p = \u22120.017) (Digit Span Backward, r= \u22120.55, p = 0.021) (Digit Span Total, r = \u22120.74, p = 0.001), and executive function (Stroop Color Word Interference, r = \u22120.8, p = 0.0003). (3) Conclusions: This pilot study provides preliminary evidence suggesting that cognitive dysfunction may be associated with prolonged ISI and KD test times in concussion.<\/jats:p>","DOI":"10.3390\/brainsci11121571","type":"journal-article","created":{"date-parts":[[2021,11,29]],"date-time":"2021-11-29T01:49:58Z","timestamp":1638150598000},"page":"1571","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["King-Devick Test Performance and Cognitive Dysfunction after Concussion: A Pilot Eye Movement Study"],"prefix":"10.3390","volume":"11","author":[{"given":"Doria M.","family":"Gold","sequence":"first","affiliation":[{"name":"Department of Neurology, New York University Grossman School of Medicine, New York, NY 10016, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John-Ross","family":"Rizzo","sequence":"additional","affiliation":[{"name":"Department of Neurology, New York University Grossman School of Medicine, New York, NY 10016, USA"},{"name":"Department of Physical Medicine & Rehabilitation, New York University Grossman School of Medicine, New York, NY 10016, USA"},{"name":"Department of Mechanical & Aerospace Engineering, New York University Tandon School of Engineering, New York, NY 11201, USA"},{"name":"Department of Biomedical Engineering, New York University Tandon School of Engineering, New York, NY 11201, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuen Shan Christine","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine & Rehabilitation, New York University Grossman School of Medicine, New York, NY 10016, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amanda","family":"Childs","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine & Rehabilitation, New York University Grossman School of Medicine, New York, NY 10016, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Todd E.","family":"Hudson","sequence":"additional","affiliation":[{"name":"Department of Neurology, New York University Grossman School of Medicine, New York, NY 10016, USA"},{"name":"Department of Physical Medicine & Rehabilitation, New York University Grossman School of Medicine, New York, NY 10016, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"John","family":"Martone","sequence":"additional","affiliation":[{"name":"Department of Neurology, New York University Grossman School of Medicine, New York, NY 10016, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuka K.","family":"Matsuzawa","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine & Rehabilitation, New York University Grossman School of Medicine, New York, NY 10016, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Felicia","family":"Fraser","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine & Rehabilitation, MetroHeath System, Cleveland, OH 44109, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Joseph H.","family":"Ricker","sequence":"additional","affiliation":[{"name":"Department of Physical Medicine & Rehabilitation, New York University Grossman School of Medicine, New York, NY 10016, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Weiwei","family":"Dai","sequence":"additional","affiliation":[{"name":"Department of Neurology, New York University Grossman School of Medicine, New York, NY 10016, USA"},{"name":"Department of Electrical & Computer Engineering, New York University Tandon School of Engineering, New York, NY 11201, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ivan","family":"Selesnick","sequence":"additional","affiliation":[{"name":"Department of Electrical & Computer Engineering, New York University Tandon School of Engineering, New York, NY 11201, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Laura J.","family":"Balcer","sequence":"additional","affiliation":[{"name":"Department of Neurology, New York University Grossman School of Medicine, New York, NY 10016, USA"},{"name":"Department of Population Health, New York University Grossman School of Medicine, New York, NY 10016, USA"},{"name":"Department of Ophthalmology, New York University Grossman School of Medicine, New York, NY 10016, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Steven L.","family":"Galetta","sequence":"additional","affiliation":[{"name":"Department of Neurology, New York University Grossman School of Medicine, New York, NY 10016, USA"},{"name":"Department 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