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Related to saccade: nystagmus, antisaccade


 (să-käd′, sə-)
A rapid intermittent eye movement, as that which occurs when the eyes fix on one point after another in the visual field.

[French, jerk, jolt, from Middle French, from Old French dialectal saquer, to jerk, pull, variant of Old French sachier, to pull forcefully, turn over, shake up, from sac, sack (perhaps in reference to the shaking of bags of wheat to settle their contents); see sac1.]

sac·cad′ic adj.


(səˈkɑːd; -ˈkeɪd)
1. (Physiology) the movement of the eye when it makes a sudden change of fixation, as in reading
2. (Horse Training, Riding & Manège) a sudden check given to a horse
[C18: from French: a jerk on the reins of a horse]



a rapid, irregular eye movement that occurs when changing focus from one point to another, as while reading or looking out from a moving train.
[1950–55; < French saccade jerk, jolt < Middle French saqu(er) to pull violently]
sac•cad′ic, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.saccade - a rapid, jerky movement of the eyes between positions of rest
eye movement - the movement of the eyes
2.saccade - an abrupt spasmodic movement
movement, motility, motion, move - a change of position that does not entail a change of location; "the reflex motion of his eyebrows revealed his surprise"; "movement is a sign of life"; "an impatient move of his hand"; "gastrointestinal motility"
References in periodicals archive ?
An introduction to saccade recording in the clinical setting--Yasuo TERAO, Hideki FUKUDA and Okihide HIKOSAKA
Counts are also possible, both spatial and temporal, such as number of fixations, fixation positions, and saccade durations (Radach & Kennedy, 2004).
These finding suggest that assessing the ability of people to adapt saccade amplitudes is one way to determine whether this function of the cerebellum is altered in ASD," said Edward Freedman, Ph.
However, this approach ignored some characteristics of the human eye, such as saccade, rod photoreceptors, and retinal kinetics for six different chemicals.
During a saccade, the visual system receives both retinal output and a corollary or copy of the command to move the eye (corollary discharges (3)).
Specifically, this suggests that saccade initiation arises from a neural computation based on detection of a threshold level of a dynamically updated decision signal that encodes noisy sensory data, similar to the processes inferred from previous studies of visual search strategies in primates.
Methods: Sixty patients with depressive disorder and sixty healthy controls (who were matiched by gender, age and years of education) were recruited, and completed eye movement tests including three tasks: fixation task, saccade task and free-view task.
The saccade amplitude represents the difficulty faced by the driver in acquiring information, with the lower the breadth of the search, the narrower the driver's field of view (Yuan, 2013).
Peak value of the saccade speed was used to reflect the mental workload [24].
There are two main kinds of eye movements, namely, saccade and smooth pursuit movements.