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 (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 ?
What saccadic eye movements tell us about TMS-induced neuromodulation of the DLPFC and mood changes: a pilot study in bipolar disorders.
Informational characteristics of the double-step saccadic eye movements // Information technology and control.
Saccadic eye movement abnormalities in relatives of patients with schizophrenia.
Winner-take-all Model", Clark, 1999; Sequential Attention Model, Henderson, 1992; premotor theory of attention, Rizzolatti, Riggio, Dascola, & Umilta, 1987) the debate remains concerning the exact nature of attention and saccadic eye movement mechanisms.
In a study of saccadic eye movements after ingestion of either flunarizine or cinnarizine in 10 subjects, Shupak et al found that peak saccadic velocity was significantly lower in the flunarizine group.
Letting the arrow in Figure 1 represent a single, rightward, saccadic eye movement and the asterisk represent a single flashing light, the bracketed array represents the phenomenal appearance.
Similar to the saccadic eye movement, the outcome measure was a pass or fail score based on the percentage of the correct responses (i.
However, it is worth to note that, in the primate oculomotor system, the neurons in the paramedian pontine reticular formation (PPRF) and in the mesencephalic reticular formation are involved in the generation of horizontal and vertical components, respectively, of saccadic eye movements.
Saccadic eye movement, dysmetria, and lateral gaze nystagnms were observed.
In the present study, participants responded to the appearance of the target by executing a saccadic eye movement in order to fixate it.