Results 281 to 290 of about 53,878 (340)

Foveating saccades

Vision Research, 1990
A review of the literature revealed that foveating saccades were found to be faster than other fast eye movements (FEMs) except optokinetic nystagmus (OKN) quick phase. In the present experiment, foveating saccades were compared to OKN quick phase in humans and were found to have higher maximum speeds and shorter durations. Unlike previous experiments,
S G, Whittaker, R W, Cummings
openaire   +2 more sources

Is saccadic suppression really saccadic?

Vision Research, 1971
Abstract Visual thresholds were measured during voluntary saccades of 8° under different conditions. From the experimental data the contributions of the “smearing” and the propre suppression were evaluated. It was found that the suppression disappears when the luminance of the screen was 4 × 10 −2 nt. On the contrary, the suppression increases when
L, Mitrani, N, Yakimoff, , St Mateeff
openaire   +2 more sources

Instrumentation to stimulate gap saccades, pro-saccades, and overlap saccades

2014 40th Annual Northeast Bioengineering Conference (NEBEC), 2014
Although a great amount of research studying oculomotor function has been conducted, a full understanding of how it relates to and is affected by neurological and neurodegenerative disorders is still warranted. This experiment seeks to build a system comparing pro-saccades, gap saccades, and overlap saccadic eye movements.
David Thibodeaux, Hassan Muhammad, Silvana L. Costa, Tara L. Alvarez   +3 more
openaire   +1 more source

Exploring and targeting saccades dissociated by saccadic adaptation

Brain Research, 2011
Saccadic adaptation maintains saccade accuracy and has been studied with targeting saccades, i.e. saccades that bring the gaze to a target, with the classical intra-saccadic step procedure in which the target systematically jumps to a new position during saccade execution.
Louisa, Lavergne, Dorine, Vergilino-Perez, Christelle, Lemoine, Thérèse, Collins, Karine, Doré-Mazars   +4 more
openaire   +2 more sources

New perspectives on the pathophysiology of Parkinson’s disease as assessed by saccade performance: A clinical review

Clinical Neurophysiology, 2013
We reviewed basal ganglia (BG) dysfunction in Parkinson’s disease (PD) based on recent findings on saccade performance. Hypometria in all saccade paradigms and impaired initiation of internally triggered saccades such as memory guided saccades (MGS) are ...
Y. Terao, H. Fukuda, Y. Ugawa, O. Hikosaka   +3 more
semanticscholar   +1 more source

Corrective saccades: Effect of shifting the saccade goal

Vision Research, 1982
A double step paradigm was used to investigate the saccade control, in particular the role of retinal feedback on correction saccades. The first target step eliciting the primary saccade had an amplitude of 10-15 deg and was followed by a second target step of 3 deg which occurred 0-300 msec after the onset of the primary saccade.
H, Deubel, W, Wolf, G, Hauske
openaire   +2 more sources

Fixation and saccade control in an express-saccade maker

Experimental Brain Research, 1996
In express-saccade makers a large incidence of express saccades (latencies around 100 ms) is paralleled by a reduced ability to suppress saccade generation when required. Such a behavior occurs frequently in dyslexics. We studied the latencies and the metrical properties of saccades in the very rare case of an adult, nondyslexic express-saccade maker ...
Cavegn, Daniel, Biscaldi, Monica
openaire   +3 more sources

Age-related trends in saccade characteristics among the elderly

Neurobiology of Aging, 2011
Alicia Peltsch, D P Munoz
exaly   +2 more sources

The aftermath of horizontal saccades: Saccadic retraction and cyclotorsion

Vision Research, 1986
During horizontal saccades from either nasal or temporal direction, the eye is retracted into its orbit (about 100 micron for 8 degrees saccades), presumably due to co-contraction of the recti. That translational displacement of the eye thereafter slowly decays, with a half-time of about 100 msec.
openaire   +2 more sources

Saccadic adaptation shifts the pre-saccadic attention focus

Experimental Brain Research, 2005
The well-documented phenomenon of the spatial coupling between saccadic programming and the orienting of attention refers to the fact that visual attention is directed toward the location that the eyes are aiming for. However, the question remains open as to whether saccades and attention are two independent processes that can be directed concurrently ...
Karine, Doré-Mazars, Thérèse, Collins
openaire   +2 more sources