Results 271 to 280 of about 1,675,436 (339)

Smooth pursuit under stimulus–response uncertainty

Cognitive Brain Research, 2004
Simple reaction times (RTs) are typically faster than choice reaction times and increase with uncertainty according to Hick's law. Here we show that smooth pursuit eye movement RTs show no effect of SR uncertainty while joystick tracking shows a step change between SRT and CRT, but no significant increases beyond two choices.
Marian, Berryhill, Kestutis, Kveraga, Leanne, Boucher, Howard C, Hughes   +3 more
openaire   +2 more sources

Neurology of saccades and smooth pursuit

Current Opinion in Neurology, 1999
During the period covered by this review a number of papers have been published on saccade and smooth pursuit research, conducted experimentally in monkeys and clinically in humans. In monkeys, using mainly electrophysiological methods, the roles of the frontal eye field, parietal eye field and supplementary eye field at the cortical level, and those ...
B, Gaymard, C, Pierrot-Deseilligny
openaire   +2 more sources

Human smooth pursuit: stimulus-dependent responses

Journal of Neurophysiology, 1987
We studied pursuit eye movements in seven normal human subjects with the scleral search-coil technique. The initial eye movements in response to unpredictable changes in target motion were analyzed to determine the effect of target velocity and position on the latency and acceleration of the response.
J R, Carl, R S, Gellman
openaire   +2 more sources

Vehicle Path Tracking Control Using Pure Pursuit With MPC-Based Look-Ahead Distance Optimization

IEEE Transactions on Vehicular Technology
Optimizing look-ahead distance for the pure pursuit has been an important issue as it determines the relation between the smooth path tracking performance and tracking error.
Seungtaek Kim, Jonghyup Lee, Kyoungseok Han, Seibum B. Choi   +3 more
semanticscholar   +1 more source

Smooth pursuit disorders.

Bailliere's clinical neurology, 1994
Smooth pursuit is a relatively recent eye movement which has developed in frontal-eyed species. The smooth pursuit system is involved during foveal smooth pursuit, the 'rapid' component of OKN slow phase and VOR suppression. The cortical areas controlling smooth pursuit (at the temporo-parieto-occipital junction and in the FEF) send ipsilateral ...
C, Pierrot-Deseilligny, B, Gaymard
openaire   +1 more source

Smooth Pursuit in Strabismic Children

1994
Pursuit responses to a sinusoidally moving target have been studied in subjects of pediatric age affected by late-onset strabismus. The smooth pursuit (SP) has been evaluated from the smooth components of eye velocity and the global pursuit (GP), due to the interaction of the smooth pursuit and the saccadic systems, has been studied on the eye position
DA POZZO S., PENSIERO S., DELL'AQUILA T., INCHINGOLO P., ACCARDO, AGOSTINO, SPAGNO C., PERISSUTTI P.   +6 more
openaire   +2 more sources

Smooth pursuit of amodally completed images

Experimental Eye Research, 2019
In order to evaluate the effect of the parafoveal area of the retina on smooth pursuit, we compared the horizontal smooth pursuit of visible and amodally completed stimuli in people with central vision loss and controls. In the amodally completed stimuli, a black mask covered the bottom vertex of a moving diamond which is the feature whose movement ...
Esther G. González, Henry Liu, Luminita Tarita-Nistor, Efrem Mandelcorn, Mark Mandelcorn   +4 more
openaire   +2 more sources

Eye Movements, Smooth Pursuit

2003
Smooth pursuit (SP) maintains visual acuity of slow-moving objects by keeping their image near the fovea. SP impairment is recognized by saccadic pursuit and occurs toward the side of lesions at the parietal, occipital, and temporal lobe junction (area V5); the frontal eye field and their projections to the basal pontine nuclei; paraflocculus; and ...
openaire   +1 more source

Smooth pursuit dysfunction in Alzheimer's disease

Neurology, 1988
Smooth ocular pursuit was measured by magnetic search coil oculography in 13 patients with Alzheimer's disease and compared with control subjects. Smooth eye movement gain was uniformly reduced in Alzheimer's disease at all target velocities for several frequencies of sinusoidal target motion, signifying impairment of steady-state gain.
W A, Fletcher, J A, Sharpe
openaire   +2 more sources

Cerebellar role in smooth pursuit movement

Documenta Ophthalmologica, 1977
It is generally believed that pursuit eye movements are unaffected by cerebellar cortical atrophy or cerebellectomy. The present study was performed on patients who underwent partial vermis and hemisphere ablations as a result of severe cranial injury or cerebellar tumors. Eye movements were measured by DC electro-oculography.
P, Nemet, S, Ron
openaire   +2 more sources