Results 1 to 10 of about 130 (95)
Covert oculo-manual coupling induced by visually guided saccades [PDF]
Frontiers in Human Neuroscience, 2013 Hand pointing to objects under visual guidance is one of the most common motor behaviors in everyday life. In natural conditions, gaze and arm movements are commonly aimed at the same target and the accuracy of both systems is considerably enhanced if ...
Claudio Maioli, Luca Falciati
exaly +5 more sources
Short-Latency Covert Saccades - The Explanation for Good Dynamic Visual Performance After Unilateral Vestibular Loss? [PDF]
Frontiers in Neurology, 2021 Background: Functional head impulse test (fHIT) tests the ability of the vestibulo-ocular reflex (VOR) to allow visual perception during head movements. Our previous study showed that active head movements to the side with a vestibular lesion generated a
Fredrik Tjernström +2 more
exaly +5 more sources
PLoS ONE, 2014 Patients with bilateral vestibular dysfunction cannot fully compensate passive head rotations with eye movements, and experience disturbing oscillopsia.
Stefano Ramat +2 more
exaly +7 more sources
The Role of Neck Input in Producing Corrective Saccades in the Head Impulse Test
Frontiers in Neurology, 2022 BackgroundThe head impulse test is a valuable clinical test that can help identify peripheral vestibular dysfunction by observing corrective saccades that return the eyes to the target of interest.
Makoto Kinoshita +2 more
exaly +3 more sources
New insights into vestibular-saccade interaction based on covert corrective saccades in patients with unilateral vestibular deficits [PDF]
Journal of Neurophysiology, 2017 In response to passive high-acceleration head impulses, patients with low vestibulo-ocular reflex (VOR) gains often produce covert (executed while the head is still moving) corrective saccades in the direction of deficient slow phases. Here we examined 23 patients using passive, and 9 also active, head impulses with acute (< 10 days from onset ...
Stefano Ramat +2 more
exaly +5 more sources
Covert Visual Spatial Orienting and Saccades: Overlapping Neural Systems
NeuroImage, 2000 We used functional magnetic resonance imaging (fMRI) to investigate the functional anatomical relationship between covert orienting of visual spatial attention and execution of saccadic eye movements. Brain areas engaged by shifting spatial attention covertly and by moving the eyes repetitively toward visual targets were compared and contrasted ...
Anna Christina Nobre +2 more
exaly +3 more sources
Covert preparation of a manual response in a ‘go’/’no-go’ saccadic task is driven by execution of the eye movement and not by visual stimulus occurrence. [PDF]
Frontiers in Human Neuroscience, 2015 It has been recently demonstrated that visually guided saccades are linked to changes in muscle excitability in the relaxed upper limb, which are compatible with a covert motor plan encoding a hand movement toward the gaze target.
Claudio eMaioli, Luca eFalciati
doaj +4 more sources
The neurology of saccades and covert shifts in spatial attention [PDF]
Brain, 2000 S Zeki
exaly +2 more sources
Frontiers in Neurology, 2019 Patients with vestibular deficit use slow eye movements or catch-up saccades (CUS) to compensate for impaired vestibulo-ocular reflex (VOR). The purpose of CUS is to bring the eyes back to the visual target.
Christian van Nechel, Michel Toupet
exaly +3 more sources
Vision Research, 2007 Target detection during active visual search was examined. The chance corrected spatial distribution of target detection was found to be symmetrically distributed around the point of fixation and, unexpectedly, was independent of the proximity of fixations to the display boundaries.
Motter, B.C., Holsapple, J.
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