King-Devick Test Performance and Cognitive Dysfunction after Concussion: A Pilot Eye Movement Study

Autor: Yuka Matsuzawa, Todd E. Hudson, Felicia Fraser, Ivan Selesnick, Weiwei Dai, Doria M. Gold, Steven Galetta, John Martone, Laura J. Balcer, Amanda Childs, John Ross Rizzo, Janet C. Rucker, Yuen Shan Christine Lee, Joseph H. Ricker
Rok vydání: 2021
Předmět:
Zdroj: Brain Sciences
Brain Sciences; Volume 11; Issue 12; Pages: 1571
Brain Sciences, Vol 11, Iss 1571, p 1571 (2021)
ISSN: 2076-3425
Popis: (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 ± 20.7 s) and median ISI (379.1 ± 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 = −0.65, p = 0.006) (Digit Span Forward, r = 0.57, p = −0.017) (Digit Span Backward, r= −0.55, p = 0.021) (Digit Span Total, r = −0.74, p = 0.001), and executive function (Stroop Color Word Interference, r = −0.8, 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.
Databáze: OpenAIRE
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