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Are Covert Saccade Functionally Relevant in Vestibular Hypofunction? [PDF]
The Cerebellum, 2017 The vestibulo-ocular reflex maintains gaze stabilization during angular or linear head accelerations, allowing adequate dynamic visual acuity. In case of bilateral vestibular hypofunction, patients use saccades to compensate for the reduced vestibulo-ocular reflex function, with covert saccades occurring even during the head displacement. In this study,
Hermann, Ruben +5 more
openaire +5 more sources
Effect of sensorimotor adaptation of saccades on covert attention.
Journal of Vision, 2013 Denis Pelisson, Christian Urquizar
exaly +2 more sources
Selective attention before saccades relies more on distractor suppression than covert attention
Journal of Vision, 2022 Julie Ouerfelli-Ethier +4 more
exaly +2 more sources
Compensatory saccade in the vestibular impaired monkey
Frontiers in Neurology, 2023 IntroductionLoss of the vestibulo-ocular reflex (VOR) affects visual acuity during head movements. Patients with unilateral and bilateral vestibular deficits often use saccadic eye movements to compensate for an inadequate VOR.
Yoshiko Kojima +4 more
doaj +1 more source
Dopamine and impairment at the executive level. [PDF]
, 1999 Patients with schizophrenia have an impairment in the inhibition of reflexive saccades, as a consequence of a functional impairment of the prefrontal cortex, which has not yet been encapsulated in terms of a formal model.
Broerse, Annelies +5 more
core +4 more sources
Video head impulse test in bilateral vestibulopathy
Brazilian Journal of Otorhinolaryngology, 2022 Introduction: Bilateral vestibulopathy is a rare chronic condition with multiple etiologies. Bilateral vestibulopathy is characterized mainly by unsteadiness when walking or standing, which worsens in darkness, as well as oscillopsia.
Mayada Elsherif, Mirhan Eldeeb
doaj +1 more source
The effect of offset cues on saccade programming and covert attention [PDF]
Quarterly Journal of Experimental Psychology, 2018 Salient peripheral events trigger fast, “exogenous” covert orienting. The influential premotor theory of attention argues that covert orienting of attention depends upon planned but unexecuted eye-movements. One problem with this theory is that salient peripheral events, such as offsets, appear to summon attention when used to measure covert attention (
Smith, D.T., Casteau, S.
openaire +4 more sources
Counterproductive effect of saccadic suppression during attention shifts. [PDF]
PLoS ONE, 2014 During saccadic eye movements, the processing of visual information is transiently interrupted by a mechanism known as "saccadic suppression" [1] that is thought to ensure perceptual stability [2]. If, as proposed in the premotor theory of attention [3],
Alexandre Zénon +4 more
doaj +1 more source
Enhanced Eye Velocity With Backup Saccades in vHIT Tests of a Menière Disease Patient: A Case Report
Frontiers in Surgery, 2021 Reduced eye velocity and overt or covert compensatory saccades during horizontal head impulse testing are the signs of reduced vestibular function. However, here we report the unusual case of a patient who had enhanced eye velocity during horizontal head
Maria Montserrat Soriano-Reixach +6 more
doaj +1 more source
, 2011 Covert movement is movement that is not phonologically visible in the syntactic derivation. While covert A'-movement is widely proposed, covert A-movement is quite uncommon and difficult to identify.
Polinsky, Maria, Potsdam, Eric
core +6 more sources