Results 61 to 70 of about 37,346 (289)
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 +5 more
wiley +1 more source
Normal Pursuit-System Limitations— First Discovered in Infantile Nystagmus Syndrome
Journal of Eye Movement Research, 2013 Infantile nystagmus syndrome (INS) patients occasionally have impaired pursuit. Model and patient data identified relative timing between target motion initiation and INS-waveform saccades as the cause. We used a new stimulus, the “step-pause-ramp” (SPR),
Louis F. Dell’Osso, Jonathan B. Jacobs
doaj +1 more source
Abnormal Fixational Eye Movements in Amblyopia. [PDF]
PLoS ONE, 2016 PURPOSE:Fixational saccades shift the foveal image to counteract visual fading related to neural adaptation. Drifts are slow eye movements between two adjacent fixational saccades.
Aasef G Shaikh +3 more
doaj +1 more source
Generalized Dystonia With Cervical Predominance in a Patient With a De Novo TCF20 Variant
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT TCF20 has been implicated in developmental delay and intellectual disability, with dystonia reported less frequently. We describe a woman in her early twenties with childhood‐onset learning difficulties, progressive dysarthria, tremor, and generalized dystonia with marked cervical predominance, associated with a de novo TCF20 frameshift ...
Melisa Kilic +7 more
wiley +1 more source
Directional differences in saccades
Frontiers in NeurologyIntroductionThough saccades are believed to be generated by similar neural mechanisms in all directions, measurements show directional differences in movement characteristics.
Takashi Jono +9 more
doaj +1 more source
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 +3 more
doaj +1 more source
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
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 +12 more
core
Advanced Robotics Research, EarlyView.We proposed a Mixed Reality Sensorized Laryngoscope Training System to provide real‐time holographic torque feedback during pediatric endotracheal intubation simulation. Visualization formats are evaluated to reduce tracking error and visual demand.
Jiaqi Li +5 more
wiley +1 more source
Latency of pro-saccades and express saccades.
, 2018 a. Latency of pro-saccades (black dots) and express saccades (white diamonds) of second measurement against first measurement of all subjects. The dotted line corresponds to absolute agreement between the two measurement. b. Latency of first measurement (
L. J. van Rijn (5519000) +6 more
core +1 more source