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Auteur Benjamin Thompson
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Ajouter le résultat dans votre panier Affiner la rechercheAthletes Demonstrate Superior Dynamic Visual Acuity / Alan Yee in OVS : Optometry & Vision Science, vol. 98, 07 (Juillet 2021)
[article]
in OVS : Optometry & Vision Science > vol. 98, 07 (Juillet 2021)
Titre : Athletes Demonstrate Superior Dynamic Visual Acuity Type de document : article de périodique Auteurs : Alan Yee ; Benjamin Thompson ; Elizabeth Irving ; Kristine Dalton Année de publication : 2021 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Acuité visuelle
[Thésaurus Mesh]Athlètes
[Thésaurus Mesh]Jeux vidéo
[Thésaurus Mesh]Mouvements oculaires
[Thésaurus Mesh]Performance sportive
[Thésaurus Mesh]Vision oculaireRésumé : SIGNIFICANCE: Athletes exhibit better dynamic visual acuity (DVA) compared with nonathletes, whereas action
video game players (VGPs) perform more similarly to controls despite having similar static visual acuity and refractive errors. The differences in DVA between groups were not related to differences in static visual acuity, refractive
error, or smooth pursuit gain.
PURPOSE: The purpose of the study was to examine whether athletes and VGPs have superior DVA than controls
(nonathletes, nongamers).
METHODS: Forty-six participants (15 athletes, 11 VGPs, 20 controls) aged 21.7 years (standard deviation,
2.8 years) were recruited. Participants were emmetropic with equivalent monocular and binocular static visual
acuity between groups. Dynamic visual acuity was assessed using predictable (horizontal) and unpredictable (random) motion targets at velocities of 5, 10, 20, and 30°/s. Smooth pursuit eye movements were assessed using a
horizontal motion step-ramp stimulus at the same speeds. This study was pre-registered with the Center for Open
Science (https://osf.io/eu7qc).
RESULTS: At 30°/s, there were significant main effects of group (F = 4.762, P = .01) and motion type (F = 9.538,
P = .004). Tukey post hoc analysis for groups indicated that athletes performed better than did the control group
(t = −2.919, P < .02). An omnibus (group motion type speed) repeated measures ANOVA showed a main effect of speed (F = 110.137, P < .001) and a speed motion-type interaction (F = 27.825, P < .001). Dynamic
visual acuity decreased as speed increased, and the slope of the change was greater for random than for horizontal
motion. Smooth pursuit gains were not significantly different between groups (P > .05).
CONCLUSIONS: Athletes have superior dynamic visual acuity performance compared with controls at 30°/s. This
between-group difference cannot be fully explained by differences in smooth pursuit eye movements and therefore
may reflect other differences between the groups.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire Suprathreshold motion perception in anisometropic amblyopia Interocular speed matching and the pulfrich effect / Goro Maehara in OVS : Optometry & Vision Science, vol. 96, 06 (Juin 2019)
[article]
in OVS : Optometry & Vision Science > vol. 96, 06 (Juin 2019)
Titre : Suprathreshold motion perception in anisometropic amblyopia Interocular speed matching and the pulfrich effect Type de document : article de périodique Auteurs : Goro Maehara ; Syunsuke Araki ; Tsuyoshi Yoneda ; Benjamin Thompson ; Atsushi Miki Année de publication : 2019 Langues : Français (fre) Descripteurs (mots clés) : [Thésaurus Mesh]Amblyopie
[Thésaurus Mesh]Collecte de données
[Thésaurus Mesh]Mouvement
[Thésaurus Mesh]Perception
[Thésaurus HELB]:Optique:luminance
[Thésaurus HELB]:Optique:luminositéRésumé : SIGNIFICANCE Our results indicate that the difference in perceived luminance between the amblyopic and fellow eyes that is present under dichoptic viewing conditions does not affect the perceived speed of suprathreshold motion stimuli. This finding provides a new insight into suprathreshold perception in amblyopia.
PURPOSE Interocular matching experiments indicate that dichoptically presented stimuli have a lower perceived luminance in amblyopic eyes relative to fellow eyes. This may be a consequence of interocular suppression. We investigated whether this effect extends to suprathreshold motion perception.
METHODS Participants with amblyopia and control observers matched the perceived speed of dichoptically presented random-dot kinematograms and the perceived luminance of gray patches. Control participants also performed the speed matching task with a neutral density filter over one eye to simulate a perceived luminance reduction.
RESULTS The amblyopia group exhibited lower perceived luminance in the amblyopic than in the fellow eye, as has previously been reported. However, interocular speed matching was veridical. For control observers, perceived speed was reduced in the eye with a neutral density filter relative to the nonfiltered eye. To assess whether the perceived luminance reduction in the amblyopic eye affected binocular function, we also measured the Pulfrich effect in the amblyopia group with equal luminance presented to each eye. No patients reported a spontaneous Pulfrich effect.
CONCLUSIONS The results suggest that suprathreshold speed perception is intact in the amblyopic eye when both eyes are open.Permalink : https://bibliotheque.helb-prigogine.be/opac_css/index.php?lvl=notice_display&id= [article]Exemplaires
Cote Support Localisation Section Disponibilité aucun exemplaire