Your browser doesn't support javascript.
loading
Elevated Smooth Pursuit Gain in Collegiate Athletes with Sport-related Concussion Immediately Following Injury.
R Taylor, Madison; Berryhill, Marian; Mathew, Dennis; G Murray, Nicholas.
Afiliação
  • R Taylor M; School of Public Health, University of Nevada, Reno, NV, USA.
  • Berryhill M; Department of Psychology, University of Nevada, Reno, NV, USA.
  • Mathew D; Department of Biology, University of Nevada, Reno, NV, USA.
  • G Murray N; School of Public Health, University of Nevada, Reno, NV, USA.
J Ophthalmic Vis Res ; 19(2): 227-234, 2024.
Article em En | MEDLINE | ID: mdl-39055511
ABSTRACT

Purpose:

Although there is evidence that sport-related concussion (SRC) affects oculomotor function and perceptual ability, experiments are often poorly controlled and are not replicable. This study aims to test the hypothesis that there are decreased values when assessing oculomotor impairment indicating poorer performance in SRC patients.

Methods:

Fifteen DI athletes presenting with SRC (7 females, 8 males) and 15 student volunteers (CON) (12 females, 3 males) completed a dynamic visual acuity (DVA) task that involved answering the direction of a moving stimulus (Landolt C) while wearing a head-mounted binocular eye tracker. There were 120 trials total with 60 trials presenting at 30º per second and 60 presenting at 90º per second. Various eye movement measurements, including horizontal smooth pursuit eye movements (SPEM) gain and saccadic peak velocity, were analyzed between groups using univariate ANOVAs. Saccade count in SPEM trials, accuracy, and vision were analyzed using Kruskal-Wallis tests.

Results:

There was no statistical difference in saccadic peak velocity SRC = 414.7 ± 42º/s, CON = 406.6 ± 40.6º/s. A significant difference was found between SRC patients and healthy controls in horizontal SPEM gain (SRC = 0.9 ± 0.04, CON = 0.86 ± 0.03, F(1,28) = 7.243, P = 0.012) indicating that patients demonstrated compensatory eye movements when tracking the target. There were significantly more saccades in all SPEM trials (P = 0.001).

Conclusion:

SRCoculomotor deficits manifest as elevated horizontal SPEM gain when assessed within 48 hours of injury and compared to healthy controls within the same age range. SRC demonstrates altered oculomotor ability. While accurate in tracking a stimulus, SRC patients may conduct less controlled eye movements.
Palavras-chave

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Ophthalmic Vis Res Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Estados Unidos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: J Ophthalmic Vis Res Ano de publicação: 2024 Tipo de documento: Article País de afiliação: Estados Unidos