Results 1 to 10 of about 1,359,314 (221)
Abnormal Fixational Eye Movements in Amblyopia [PDF]
PLoS ONE, 2016 Fixational saccades shift the foveal image to counteract visual fading related to neural adaptation. Drifts are slow eye movements between two adjacent fixational saccades. We quantified fixational saccades and asked whether their changes could be attributed to pathologic drifts seen in amblyopia, one of the most common causes of blindness in childhood.
Fatema F Ghasia +2 more
exaly +8 more sources
Bayesian Dynamical Modeling of Fixational Eye Movements [PDF]
Biological CyberneticsAbstract Humans constantly move their eyes, even during visual fixations, where miniature (or fixational) eye movements occur involuntarily. Fixational eye movements comprise slow components (physiological drift and tremor) and fast components (microsaccades).
Ralf Engbert +2 more
exaly +9 more sources
Fixational eye movements following concussion. [PDF]
J Vis, 2021 The purpose of this study was to evaluate fixational eye movements (FEMs) with high spatial and temporal resolution following concussion, where oculomotor symptoms and impairments are common. Concussion diagnosis was determined using current consensus guidelines. A retinal eye-tracking device, the tracking scanning laser ophthalmoscope (TSLO), was used
Leonard BT +10 more
europepmc +4 more sources
Fixational Eye Movements Predict Visual Sensitivity [PDF]
Proceedings of the Royal Society B: Biological Sciences, 2015 During steady fixation, observers make small fixational saccades at a rate of around 1–2 per second. Presentation of a visual stimulus triggers a biphasic modulation in fixational saccade rate—an initial inhibition followed by a period of elevated rate and a subsequent return to baseline.
Paul V. McGraw +2 more
exaly +7 more sources
Neuronal control of fixation and fixational eye movements. [PDF]
Philos Trans R Soc Lond B Biol Sci, 2017 Ocular fixation is a dynamic process that is actively controlled by many of the same brain structures involved in the control of eye movements, including the superior colliculus, cerebellum and reticular formation. In this article, we review several aspects of this active control.
Krauzlis RJ, Goffart L, Hafed ZM.
europepmc +5 more sources
Cognitive influences on fixational eye movements. [PDF]
Curr Biol, 2023 We perceive the world based on visual information acquired via oculomotor control,1 an activity intertwined with ongoing cognitive processes.2,3,4 Cognitive influences have been primarily studied in the context of macroscopic movements, like saccades and smooth pursuits. However, our eyes are never still, even during periods of fixation.
Lin YC +4 more
europepmc +3 more sources
Fixational eye movements in Tourette syndrome. [PDF]
Neurol Sci, 2017 Studies of saccadic eye movements in subjects with Tourette syndrome (TS) have provided additional evidence that there is a link between TS symptoms and deficits in fronto-striato-thalamic networks. These studies revealed impaired timing and inhibition of saccades.
Shaikh AG +4 more
europepmc +4 more sources
Control and Functions of Fixational Eye Movements. [PDF]
Annu Rev Vis Sci, 2015 Humans and other species explore a visual scene by making rapid eye movements (saccades) two to three times every second. Although the eyes may appear immobile in the brief intervals between saccades, microscopic (fixational) eye movements are always present, even when an observer is attending to a single point.
Rucci M, Poletti M.
europepmc +4 more sources
On texture, form, and fixational eye movements. [PDF]
Curr Opin Neurobiol, 2017 Recent studies show that small movements of the eye that occur during fixation are controlled in the brain by similar neural mechanisms as large eye movements. Information theory has been successful in explaining many properties of large eye movements.
Sharpee TO.
europepmc +4 more sources
A physiological perspective on fixational eye movements. [PDF]
Vision Res, 2016 For a behavioral neuroscientist, fixational eye movements are a double-edged sword. On one edge, they make control of visual stimuli difficult, but on the other edge they provide insight into the ways the visual system acquires information from the environment. We have studied macaque monkeys as models for human visual systems. Fixational eye movements
Snodderly DM.
europepmc +3 more sources