Results 61 to 70 of about 32,928 (301)

Microsaccades and preparatory set: a comparison between delayed and immediate, exogenous and endogenous pro- and anti-saccades [PDF]

, 2009
When we fixate an object, our eyes are not entirely still, but undergo small displacements such as microsaccades. Here, we investigate whether these microsaccades are sensitive to the preparatory processes involved in programming a saccade.
Frouke Hermens (17159764), Johannes M. Zanker (8378667), Robin Walker (8585)   +2 more
core   +2 more sources

Abnormal Eye Movements in Parkinsonism and Movement Disorders [PDF]

Journal of Movement Disorders, 2019
Abnormal eye movements are commonly observed in movement disorders. Ocular motility examination should include bedside evaluation and laboratory recording of ocular misalignment, involuntary eye movements, including nystagmus and saccadic intrusions ...
Ileok Jung, Ji-Soo Kim
doaj   +1 more source

The effect of distractors on saccades and adaptation of saccades in strabismus

Vision Research, 2011
This paper reports two experiments to determine the contribution of the suppressing eye to the generation of saccadic eye movements in constant strabismus. Eye movements were recorded using a Skalar infra-red recorder. Experiment 1 tested six participants with constant strabismus, pathological suppression and no clinically demonstrable binocular single
Griffiths, H., Whittle, J., Buckley, D.
openaire   +3 more sources

Gravity‐Dependent Modulation of Downbeat Nystagmus: Insights From Velocity‐Storage Dysfunction

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Downbeat nystagmus varies with head position, a phenomenon termed gravity‐dependent modulation. We aimed to clarify its mechanism using a velocity‐storage model. Methods In 10 patients with downbeat nystagmus due to cerebellar disorders, we recorded eye movements at different pitch‐ and roll‐axis head positions.
Ji‐Hyung Park, Eun‐Hyuk Choi, Jorge Otero‐Millan, David S. Zee, Jeong‐Yoon Choi, Ji‐Soo Kim   +5 more
wiley   +1 more source

High-Field fMRI Reveals Brain Activation Patterns Underlying Saccade Execution in the Human Superior Colliculus [PDF]

, 2010
Background: The superior colliculus (SC) has been shown to play a crucial role in the initiation and coordination of eye-and head-movements. The knowledge about the function of this structure is mainly based on single-unit recordings in animals with ...
Heinze, HJ, Tempelmann, C, Bodammer, N, Schoenfeld, MA, Heinze, H-J, Woldorff, MG, Hopf, JM, Noesselt, T, Krebs, RM, Boehler, CN, Scheich, H, Duzel, E, Hopf, J-M   +12 more
core  

Following Forrest Gump: Smooth pursuit related brain activation during free movie viewing

NeuroImage, 2020
Most fMRI studies investigating smooth pursuit (SP) related brain activity have used simple synthetic stimuli such as a sinusoidally moving dot. However, real-life situations are much more complex and SP does not occur in isolation but within sequences ...
Ioannis Agtzidis, Inga Meyhöfer, Michael Dorr, Rebekka Lencer   +3 more
doaj   +1 more source

The Concurrent Programming of Saccades [PDF]

PLOS ONE, 2016
Sequences of saccades have been shown to be prepared concurrently however it remains unclear exactly what aspects of those saccades are programmed in parallel. To examine this participants were asked to make one or two target-driven saccades: a reflexive saccade; a voluntary saccade; a reflexive then a voluntary saccade; or vice versa. During the first
Eugene McSorley, Rachel McCloy, Louis Williams   +2 more
openaire   +4 more sources

Global Rather Than Vertical‐Selective Saccadic Abnormalities in Progressive Supranuclear Palsy

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To test whether vertical saccades are preferentially affected in Progressive Supranuclear Palsy (PSP). Methods PSP patients (n = 24) were compared to age‐matched controls (n = 94) and two degenerative groups (Alzheimer's disease, n = 20; Lewy body disease, n = 50).
Duy Duan Nguyen, Mark Paine, Soohyun Lee, Amir Fazlollahi, Baibin (Ben) Wang, John D. O'Sullivan, Peter J. Nestor   +6 more
wiley   +1 more source

The plasticity of human saccadic eye movements [PDF]

, 1984
The central purpose of this research has been to examine the possibility of the plasticity of individual saccadic parameters and to identify their patterns of covariation.
Crawford, Trevor J.
core  

Human frontal eye fields and spatial priming of pop-out [PDF]

, 2007
"Priming of pop-out" is a form of implicit memory that facilitates detection of a recently inspected search target. Repeated presentation of a target's features or its spatial position improves detection speed (feature/spatial priming).
Neil G. Muggleton, Muggleton, NG, Jacinta O'Shea, Cowey, A, Alan Cowey, O'Shea, Jacinta, O'Shea, J, Walsh, V, Cowey, Alan, Vincent Walsh   +9 more
core   +1 more source