Results 11 to 20 of about 1,625 (159)

Systematic diagonal and vertical errors in antisaccades and memory-guided saccades [PDF]

Journal of Eye Movement Research, 2010
Studies of memory-guided saccades in monkeys show an upward bias, while studies of antisaccades in humans show a diagonal effect, a deviation of endpoints toward the 45° diagonal.
Mathias Abegg, Hyung Lee, Jason J. S. Barton   +2 more
doaj   +4 more sources

GABAergic Modulation of Brain Function During Prosaccade and Antisaccade Eye Movements: Evidence From Ultra-High-Field fMRI. [PDF]

Hum Brain Mapp
Combining eye‐tracking with 7‐Tesla fMRI, we found that lorazepam impacted (anti‐)saccadic eye movements and reduced BOLD in a fronto‐parietal‐occipital network. These areas showed higher GABAA receptor density than remaining brain areas. Individual peak velocity reductions under lorazepam were linked to lower activation in cortical regions, including ...
Quint P, Schmidt PM, Mackert S, Aslan B, Guth M, von der Emde L, Lechtenboehmer R, Faßbender K, Baumert PM, Stoffel-Wagner B, Dolscheid-Pommerich R, Stirnberg R, Stöcker T, Ettinger U.   +13 more
europepmc   +2 more sources

Instability of Oculomotor Control in Parkinson's Disease Without Freezing of Gait: Evidence From Reflexive and Voluntary Saccade Variability. [PDF]

Eur J Neurosci
This study found that people with Parkinson's disease without freezing of gait show higher error rate and peak velocity to amplitude ratio during prosaccade task compared to controls. Also, Parkinson patients show more variation in gain, peak velocity, peak acceleration and peak velocity to amplitude ratio compared to control group.
Daeinejad FS, Foumani MS, Behzadipour S, Alibiglou L.   +3 more
europepmc   +2 more sources

Ocular Motor Abnormalities in Functional Neurological Disorder: A Video-Oculography Study. [PDF]

Mov Disord Clin Pract
Abstract Background Functional neurological disorders (FND) can include various sensory, motor or cognitive symptoms. Eye movement recordings, measured through video‐oculography, could serve as biomarkers for characterizing these dysfunctions in FND.
Sangare A, de Liège A, Gaymard B, Rivaud-Péchoux S, Bonnet C, Růžička E, May J, Serranová T, Mesrati F, Roze E, Vidailhet M, Louapre C, Naccache L, Garcin B.   +13 more
europepmc   +2 more sources

Eye Movement Alterations in Post-COVID-19 Condition: A Proof-of-Concept Study

Sensors, 2022
There is much evidence pointing out eye movement alterations in several neurological diseases. To the best of our knowledge, this is the first video-oculography study describing potential alterations of eye movements in the post-COVID-19 condition ...
Cecilia García Cena, Mariana Campos Costa, Roque Saltarén Pazmiño, Cristina Peixoto Santos, David Gómez-Andrés, Julián Benito-León   +5 more
doaj   +1 more source

Purkinje Cell Activity in the Medial and Lateral Cerebellum During Suppression of Voluntary Eye Movements in Rhesus Macaques

Frontiers in Cellular Neuroscience, 2022
Volitional suppression of responses to distracting external stimuli enables us to achieve our goals. This volitional inhibition of a specific behavior is supposed to be mainly mediated by the cerebral cortex.
Eric Avila, Eric Avila, Nico A. Flierman, Nico A. Flierman, Peter J. Holland, Pieter R. Roelfsema, Pieter R. Roelfsema, Pieter R. Roelfsema, Maarten A. Frens, Aleksandra Badura, Aleksandra Badura, Chris I. De Zeeuw, Chris I. De Zeeuw   +12 more
doaj   +1 more source

Trial history biases the spatial programming of antisaccades [PDF]

, 2012
The historical context in which saccades are made influences their latency and error rates, but less is known about how context influences their spatial parameters.
Barton, Jason J S, Rastgardani, Tara, Lau, Victor, Abegg, Mathias, J. S. Barton, Jason   +4 more
core   +2 more sources

Acute stress imparts a transient benefit to task-switching that is not modulated following a single bout of exercise

Frontiers in Psychology, 2023
IntroductionCognitive flexibility represents a core component of executive function that promotes the ability to efficiently alternate—or “switch”—between different tasks.
Anisa Morava, Benjamin Tari, Benjamin Tari, Joshua Ahn, Mustafa Shirzad, Matthew Heath, Matthew Heath, Matthew Heath, Harry Prapavessis   +8 more
doaj   +1 more source

Educational and Cognitive Predictors of Pro- and Antisaccadic Performance

Frontiers in Psychology, 2017
Voluntary gaze control allows people to direct their attention toward selected targets while avoiding distractors. Failure in this ability could be related to dysfunctions in the neural circuits underlying executive functions.
Yaira Chamorro, Mario Treviño, Esmeralda Matute   +2 more
doaj   +1 more source

Eye movements in ephedrone-induced parkinsonism. [PDF]

PLoS ONE, 2014
Patients with ephedrone parkinsonism (EP) show a complex, rapidly progressive, irreversible, and levodopa non-responsive parkinsonian and dystonic syndrome due to manganese intoxication.
Cecilia Bonnet, Jan Rusz, Marika Megrelishvili, Tomáš Sieger, Olga Matoušková, Michael Okujava, Hana Brožová, Tomáš Nikolai, Jaromír Hanuška, Mariam Kapianidze, Nina Mikeladze, Nazi Botchorishvili, Irine Khatiashvili, Marina Janelidze, Tereza Serranová, Ondřej Fiala, Jan Roth, Jonas Bergquist, Robert Jech, Sophie Rivaud-Péchoux, Bertrand Gaymard, Evžen Růžička   +21 more
doaj   +1 more source