People make systematic errors when localizing a stimulus that is presented briefly near the time of a saccade. These errors have been interpreted as compression towards the position that is fixated after the saccade. Normally, fixating a position means that its image falls on the fovea. Macular degeneration (MD) damages the central retina, obliterating foveal vision. Many people with MD adopt a...

The metrics and dynamics of saccades to stationary and moving targets were observed in monkeys (Macaca mulatta). To isolate the effects of target speed on the saccade from contributions of smooth pursuit, saccade velocity was corrected for intrasaccadic pursuit velocity on a trial-by-trial basis prior to analysis. The effects of presaccadic retinal error and target speed on the saccadic velocit...

The effect of three kinds of background visual field on saccade-contingent mislocalization was compared so as to explore the critical factor responsible for visual stability during saccadic eye movements. A large mislocalization observed in the dark (DARK condition) was substantially decreased when a faint frame pattern was projected against the dark background (FRAME condition) as well as when...

Previous work (Bompas & O’Regan, 2006a, 2006b) revealed that color perception is subject to sensorimotor adaptation, i.e. to a perceptual adaptation whose effects depend on actions. In these experiments we had shown that the introduction of new sensorimotor contingencies between eye movements and color changes resulted in a consistent perceptual bias affecting color comparison judgements made a...

In a dual-task paradigm with a perceptual discrimination task and a concurrent saccade task, we examined participants' ability to make use of prior knowledge of a critical property of the perceptual target to improve discrimination. Previous research suggests that during a short time window before a saccade, covert attention is imperatively directed towards the saccade target location. Conseque...

Several cognitive models suggest that saccade RTs are controlled flexibly not only by mechanisms that accumulate sensory evidence after the appearance of a sensory stimulus (poststimulus mechanisms) but also by mechanisms that preset the saccade control system before the sensory event (prestimulus mechanisms). Consistent with model predictions, neurons in structures tightly related to saccade i...

Recent studies provide evidence for task-specific influences on saccadic eye movements. For instance, saccades exhibit higher peak velocity when the task requires coordinating eye and hand movements. The current study shows that the need to process task-relevant visual information at the saccade endpoint can be, in itself, sufficient to cause such effects. In this study, participants performed ...

The present study obtained saccadic eye movements from 122 normal subjects to establish normative values and test-retest reliability data, using a recently developed electrooculographic recording and analysis system. Factors that might affect saccade values, such as age, sex, and time of day when testing, were also assessed. Mean (+/- S.D.) peak velocity values over saccade angles of 15 degrees...

OBJECTIVE To examine the difference between schizophrenia patients and normal controls on velocity and acceleration of saccade, by using the basic visually guided saccade (VGS) paradigm. METHODS Eighteen schizophrenia outpatients and fourteen normal controls participated in the VGS task. Multiple indicators, including amplitude, duration, velocity, latency, accuracy rate, acceleration, and de...

Evidence from recent studies bolsters the idea of preestablished motor plans in scanning isolated items. Thus, refixation saccades are preplanned at the same time as the primary saccade directed to a peripheral item and are completed with fixed amplitudes irrespective of the first fixation position in the item. In order to examine the saccadic system's ability to correct the motor plan during i...