Article
Neurosciences
Stefan Dowiasch, Marius Blanke, Jonas Knoell, Frank Bremmer
Summary: Previous studies have shown that eye movements can cause errors in the localization of flashed stimuli. This study examined flash localization during open-loop pursuit and found that the perceived flash locations were shifted in the direction of the eye movement. The error pattern was similar to that observed during smooth pursuit eye movements and the slow phase of optokinetic nystagmus.
FRONTIERS IN NEUROSCIENCE
(2023)
Article
Neurosciences
Alexia Bourgeois, Virginie Sterpenich, Giannina Rita Iannotti, Patrik Vuilleumier
Summary: The study found that reward cues can selectively modulate the Frontal Eye Field (FEF) during attentional shifts, especially after high-predictive cueing to invalid locations. Reward information also modulated FEF connectivity to superior colliculus, striatum, and visual cortex.
Article
Neurosciences
Rebekka Schroeder, Kristof Keidel, Peter Trautner, Alexander Radbruch, Ulrich Ettinger
Summary: Smooth pursuit eye movements (SPEM) are crucial for guiding behavior in complex visual environments. This study investigated the neural mechanisms underlying the effects of structured visual backgrounds and target velocity on SPEM accuracy. The results showed that the presence of a structured background and faster target velocity led to decreased pursuit gain, increased catch-up saccade rate, and increased position error. The BOLD response in visual, parietal, and frontal areas, including the medial frontal eye fields (FEF), was higher with background. Faster targets were associated with higher BOLD response in visual cortex and left lateral FEF. Functional connectivity analyses largely replicated previous results in the basic SPEM network but did not provide additional information on the neural underpinnings of background and velocity effects. The findings suggest that the presentation of visual background stimuli during SPEM activates a widespread visuo-parieto-frontal network, including areas contributing to cognitive aspects of oculomotor control such as medial FEF, while the response to higher target velocity involves visual and motor areas such as lateral FEF. This study also proposes different functions for medial and lateral FEF in SPEM for the first time.
HUMAN BRAIN MAPPING
(2023)
Article
Ophthalmology
Zhenlan Jin, Ruie Gou, Junjun Zhang, Ling Li
Summary: The study found that in low load condition, TMS of the frontal pursuit area had no effect on both pursuit and letter detection tasks, while in high load condition, TMS reduced pursuit gain but tended to increase letter detection accuracy. Additionally, individual's FPA TMS effect on pursuit gain was significantly correlated with that on letter detection accuracy.
Article
Neurosciences
Alexander Goettker, Karl R. Gegenfurtner
Summary: The close relationship between eye movements and visual processing has led to recent studies focusing on interactions and shared signals between saccades and pursuit eye movements, highlighting multiple interactions and synergies in oculomotor control and visual perception.
Article
Neurosciences
Melissa Hunfalvay, Nicholas P. Murray, Revathy Mani, Frederick Robert Carrick
Summary: This study found significant deficits in fixation, saccades, and SPEM in the TBI group compared to the non-TBI group, as assessed by eye tracking tests. Eye tracking technology can effectively differentiate individuals with and without TBI based on oculomotor functions.
Article
Neurosciences
Huixi Dou, Huan Wang, Sainan Liu, Jun Huang, Zuxiang Liu, Tiangang Zhou, Yan Yang
Summary: This study reveals that monkeys exhibit a bias towards tracking the motion direction of a target with a hole, and this target is assigned a higher weight for vector computation compared to other form properties.
NEUROSCIENCE BULLETIN
(2023)
Article
Neurosciences
Takeshi Miyamoto, Kenichiro Miura, Tomohiro Kizuka, Seiji Ono
Summary: The study found that the onset times of predictive eye deceleration during pursuit termination are consistent regardless of target velocity, controlled by temporal estimation. Additionally, an unexpected offset of the target results in delays in the onset of eye deceleration, although it does not affect the total time for completion of pursuit termination.
Article
Biology
Behrad Noudoost, Kelsey Lynne Clark, Tirin Moore
Summary: This study shows that working memory directly influences the neural circuits that transform visual inputs into visually guided behavior.
Article
Multidisciplinary Sciences
Naveen Sendhilnathan, Debaleena Basu, Michael E. Goldberg, Jeffrey D. Schall, Aditya Murthy
Summary: The study revealed unexpected differences in neural signatures for goal-directed versus non-goal-directed movements in a brain area selectively implicated in voluntary control, adding critical constraints to the way we think about saccade generation in the brain.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Chemistry, Multidisciplinary
Shunya Tatara, Haruo Toda, Fumiatsu Maeda, Tomoya Handa
Summary: Smooth pursuit eye movements and saccadic eye movements play a vital role in precise vision. This study developed an all-in-one eye-movement-measuring device that can present visual stimuli, record eye positions, and evaluate eye movements. The device showed accurate measurements of eye movements, as indicated by the results of the study involving 16 participants. The device has potential clinical applications for easily and objectively evaluating eye movements.
APPLIED SCIENCES-BASEL
(2023)
Article
Multidisciplinary Sciences
Frauke Heins, Jana Masselink, Joshua-Nikodemus Scherer, Markus Lappe
Summary: The study investigates whether oculomotor behavior can be adapted based on post-saccadic target information alone. The results suggest that, based on post-saccadic information, eye movements and target localization can be adjusted to reduce errors, possibly indicating a continuous updating of the estimated pre-saccadic target location driven by postdictive motor error.
SCIENTIFIC REPORTS
(2023)
Article
Clinical Neurology
Neel Fotedar, Prasannakumar Gajera, Nataliya Pyatka, Salam Nasralla, Takafumi Kubota, Guadalupe Fernandez-Baca Vaca, Aasef G. Shaikh, Hans O. Luders
Summary: In this study, we observed the characteristics of eye and head movements during versive seizures. The results showed that in the majority of cases, the eye movements were rapid and predominantly upward. The deviation of the head was closely associated with the deviation of the eyes, and facial movement on the same side was also observed. These findings provide important information about the localization efficacy of version in seizures.
SEIZURE-EUROPEAN JOURNAL OF EPILEPSY
(2022)
Article
Psychology, Experimental
Rebekka Schroder, Philine Margarete Baumert, Ulrich Ettinger
Summary: The study found that pursuing a target at higher speeds with a background stimulus resulted in significantly reduced SPEM performance, showing good test-retest reliability. On the other hand, slower target speeds without background stimuli showed lower reliability. The effects of target velocity and background stimuli on SPEM performance demonstrated good to excellent reliabilities.
Article
Psychology, Biological
Ming-Ray Liao, Andy J. Kim, Brian A. Anderson
Summary: Reward learning can guide attention to specific regions in a scene, and this study found that it is supported by neural mechanisms in various brain regions. Participants learned to focus on a high-value quadrant in a scene to maximize monetary gains, and during a subsequent test, they were faster at identifying targets in the high-value quadrant. fMRI analyses revealed learning-dependent priority signals in several brain regions associated with attention and spatial processing. These findings provide new insights into the neural architecture of value-driven attention and expand our understanding of the brain networks involved in this process.
Article
Biology
Noga Larry, Merav Yarkoni, Adi Lixenberg, Mati Joshua
Article
Neurosciences
Matan Cain, Yehudit Botschko, Mati Joshua
Summary: This study challenges the traditional view that motor adaptation is solely driven by trial-and-error process, and suggests that errors may not be necessary for motor learning. The results indicate the presence of other mechanisms that can drive learning without actual movement.
Article
Multidisciplinary Sciences
Nadav Ben-Shushan, Nimrod Shaham, Mati Joshua, Yoram Burak
Summary: In this paper, the authors demonstrate that fixational drift, a random motion our eyes undergo between saccades, is driven by a central neural circuit within the oculomotor system. This finding helps advance our understanding of the role of fixational drift in visual processing and inference.
NATURE COMMUNICATIONS
(2022)
Article
Neurosciences
Noga Larry, Mati Joshua
Summary: The impact of correlated activity between neurons on behavior is still unclear. In this study, we developed a new method to estimate the contribution of noise correlations to behavior by partitioning them into behavior-related and behavior-unrelated correlations. We applied this method to study the relationship between noise correlations in the FEF and pursuit eye movements. Our simulations showed that our approach captures behavior-related correlations and is applicable to different models.
JOURNAL OF NEUROPHYSIOLOGY
(2023)