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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.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(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]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014



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.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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"
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
One can assume some slowing in neuronal processes in patients, consistent with significantly increased saccade latency.
As long as the patient can maintain steady fixation, the scrolling technique may make it easier to read continuous print because the patient does not need efficient saccade or scanning abilities.
A rival Chinese design available for customers unable to afford or obtain the Exocet is in the shape of the Yingji-82 (Nato reporting name CSS-N-8 'Saccade').
(17) Effects of expertise have also been observed in saccades and scanpaths: short latencies for an initial saccade distinguish good from poor cricket batting, (18) and expert radiologists prioritize their attention, scanning areas where tumors are most likely to occur, while the novice scans a radiograph evenly.
In order to understand what determines eye guidance in text reading, many studies have focused on visual and linguistic factors to explain eye movement variables such as fixation times and saccade lengths.
A saccade is a fast movement of an eye and saccades are quick, simultaneous movements of both eyes in the same direction so that small parts of a scene can be sensed with greater resolution.
In addition, for the metric of saccade length we used letters rather than visual angles because the distance the eyes traverse from one saccade to the next is determined by letters rather than visual angle as long as the text is of normal size (McDonald, 2006; Morrison & Rayner, 1981).
A VNG battery of gaze, saccade, tracking, optokinetic, static, and dynamic positional tests were performed followed by the Dix-Hallpike test.
Corrective saccades were classified as a covert saccade when they occurred during the head movement and as an overt saccade when they occurred after the head movement.
The process of eye movement consists of two elements, the saccade and fixation.
Eye tracking can be described using a) fixation, b) fixation duration, c) total fixation duration, d) saccade, e) smooth pursuit, f) regress, and g) scanpath.
= 4.76) of the times they performed a saccade. This means that for every 9 saccades, the participant had approximately 1 regressive saccade.