Article
Behavioral Sciences
Ngoc Chien Pham, Yong Gyu Kim, Sang Jeong Kim, Chang-Hee Kim
Summary: Using learning paradigms with the same total training time, this study demonstrated that the spacing effect is more robust in the adaptation of OKR than VOR, and the learning effect is also maintained longer in OKR than VOR.
BEHAVIOURAL BRAIN RESEARCH
(2022)
Article
Clinical Neurology
D. Geisinger, K. Engelberg, H. Suarez, Z. Elyoseph, C. R. Gordon, A. Z. Zivotofsky
Summary: This study investigated the perception and eye movement behavior of optokinetic nystagmus (OKN) in an immersive virtual reality environment. The results showed that participants perceived faster stimulus velocity when the head and stimulus had the same direction, but stronger nystagmus occurred when the stimulus velocity was slower. This seemingly paradoxical result can be explained by the simultaneous activation of the vestibulo-ocular reflex and OKN in response to different visual and vestibular stimuli.
JOURNAL OF THE NEUROLOGICAL SCIENCES
(2022)
Article
Clinical Neurology
Itaru Hayakawa, Yuichi Abe, Masaya Kubota
Summary: Oscillopsia caused by downbeat nystagmus can be a presenting symptom of acute cerebellitis, due to impaired feed-forward inhibition from the flocculonodular Purkinje cells in the cerebellum causing exaggerated upward vestibulo-ocular input to the eye muscles.
NEUROLOGY-CLINICAL PRACTICE
(2021)
Article
Cell Biology
Marta Barandela, Carmen Nunez-Gonzalez, Daichi G. Suzuki, Cecilia Jimenez-Lopez, Manuel A. Pombal, Juan Perez-Fernandez
Summary: Animals constantly adjust their gaze to stabilize their vision, with stabilizing movements appearing before goal-oriented responses during the development of the lamprey visual system. This finding provides valuable insights into the evolutionary and developmental processes of vertebrate vision.
FRONTIERS IN CELL AND DEVELOPMENTAL BIOLOGY
(2023)
Article
Neurosciences
Francisco Maia, Bernardo Faria Ramos, Pedro Luiz Albernaz, Renato Cal, Michael C. Schubert
Summary: This paper emphasizes the importance of bedside examinations in accurately diagnosing symptoms of dizziness and imbalance, and proposes a method for integrating laboratory testing and neural circuitry.
Article
Clinical Neurology
Sun-Uk Lee, Hyo-Jung Kim, Jeong-Yoon Choi, Jae-Hwan Choi, David S. Zee, Ji-Soo Kim
Summary: Fixation nystagmus is a type of nystagmus that appears or increases significantly during fixation. It is often associated with lesions in the cerebellar nuclei or fibers projecting from the cerebellum to the brainstem. Patients with fixation nystagmus exhibit direction-changing gaze-evoked nystagmus, impaired smooth pursuit, and decreased vestibular responses. The clinical significance of fixation nystagmus lies in its association with central lesions that impair smooth pursuit and the vestibulo-ocular reflex.
JOURNAL OF NEUROLOGY
(2022)
Article
Neurosciences
Devonte Campbell, Bernadette Ann Murphy, James Burkitt, Nicholas La Delfa, Praveen Sanmugananthan, Ushani Ambalavanar, Paul Yielder
Summary: Alterations in neck sensory input from subclinical neck pain result in disordered sensorimotor integration. The study found that individuals with subclinical neck pain had a significantly larger COR gain and smaller VOR gain, suggesting an association between proprioceptive feedback and sensorimotor integration.
Article
Clinical Neurology
Priyani Patel, Patricia Castro, Nehzat Koohi, Qadeer Arshad, Lucia Gargallo, Sergio Carmona, Diego Kaski
Summary: This study explores whether the vestibulo-ocular reflex (VOR) gain changes in response to a clinical headshake maneuver in patients with vestibular migraine (VM). The study found that there was no significant change in VOR gain after headshaking in any group. Patients who reported nausea when reading in the passenger seat of a car were more likely to have VM.
FRONTIERS IN NEUROLOGY
(2022)
Article
Engineering, Biomedical
Saeed Solouki, Farzad Mehrabi, Iraj Mirzaii-Dizgah
Summary: This study develops a firing rate model of cerebellar circuits to simulate the learning features of optokinetic reflex (OKR), and investigates the effects of synaptic plasticity defects on learning. The research reveals a correlation between the location and grade of the defect with learning factors, and proposes a differential assay to identify faulty phases of cerebellar learning.
JOURNAL OF NEURAL ENGINEERING
(2022)
Article
Engineering, Biomedical
Junfeng Liang, Venus Luong, Josh McCraw, Alissa Schroeder, Ke Zhang, Rong Gan, Chenkai Dai
Summary: This study introduces a video oculography system with 6-degree-of-freedom mobility for real-time measurements of binocular 3D eye position in small animals. A hybrid hexapod was used to control animal motion, and two methods were used to track eyeball movement. The system showed lower positional and tracking errors compared to previous systems, making it an effective tool for studying vestibulo-ocular reflex in small animals.
MEDICAL ENGINEERING & PHYSICS
(2021)
Article
Clinical Neurology
Hyun Sung Kim, Eun Hye Oh, Jeong-Yeon Kim, Seo Young Choi, Kwang-Dong Choi, Jae-Hwan Choi
Summary: This study investigated the incidence, pattern, and etiology of dissociated vestibulo-ocular reflex (VOR) function in dizzy patients. It found that discordant VOR function according to the stimulus frequency was not uncommon and different etiologies showed specific patterns of VOR dissociation.
JOURNAL OF NEUROLOGY
(2022)
Article
Multidisciplinary Sciences
Fatma Kizilay, Deniz Ugur Cengiz
Summary: This study aimed to compare functional VOR and proprioception of athletes engaged in combat sports and ball sports. The results showed that athletes engaged in ball sports had better VOR and proprioception compared to those in combat sports. Participation in ball sports can improve proprioception and vestibular functioning, leading to enhanced performance.
Article
Computer Science, Artificial Intelligence
Lingling An, Ye Yuan, Yunhao Liu, Fan Zhao, Quan Wang, Jian K. Liu
Summary: In this study, dynamic learning models were proposed to explain VOR and OKR learning. It was found that error signals played a crucial guiding role in gain compensation during VOR learning. Additionally, the effects of gain reduction and synaptic plasticity were explored using nonuniform FMM and reversal-phase FMM models.
IEEE TRANSACTIONS ON COGNITIVE AND DEVELOPMENTAL SYSTEMS
(2023)
Article
Clinical Neurology
Stefan Glasauer, Hans Straka
Summary: This study suggests that lower VOR gain values reflect an optimal adaptation to sensory and motor signal variability. Gaze stabilization mechanisms must consider the effects of sensory and motor noise and dynamic constraints of signal processing for minimizing overall retinal image slip.
FRONTIERS IN NEUROLOGY
(2022)
Article
Otorhinolaryngology
Joanna Janiak-Kiszka, Magdalena Nowaczewska, Rafal Wierzbinski, Wojciech Kazmierczak, Henryk Kazmierczak
Summary: Vestibular migraine is a disease on the border of neurology and otoneurology, and the diagnosis relies on patient history. This study analyzed videonystagmographic tests in patients with vestibular migraine and found several common abnormalities in eye movements.
POLISH JOURNAL OF OTOLARYNGOLOGY
(2022)