saccadic movements


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saccadic movements

Jerky movements of the eyes as they move from one point of fixation to another.
See also: movement
References in periodicals archive ?
Such changes may be related to a possible inefficiency of the central nervous system control on the rapid movements of the eyes, a function which is compromised in children with difficulty in reading and writing [15], as the ocular movement required for reading requires alternating saccadic movements and the eye control during periods of fixation, requiring perfect integrity of the vestibular apparatus and its saccadic movements [16,17].
While it is known that rotation of the eye results in shearing forces on the retina transmitted from the vitreous gel, saccadic movements also cause a secondary motion of the vitreous itself directed inward to the axis of rotation.
Saccades closer to the eyes were observed in the gender task and a downward shift in saccadic movements was observed in the emotion task.
We assume that, when processing spatial images, the centers involved in planning saccadic movements are occupied planning virtual movements of the images, thereby preventing physical eye movements, which would lead to longer fixations and their higher concentration or to shorter saccadic amplitude.
The gaze-tracking system records eye movement to differentiate between fixations and saccadic movements. A fixation of the eye is defined as a quasistable position of the eye in an area <1[degrees] of the visual angle [28].
decolor, could be expected to see a moving target over 360[degrees], but with a binocular visual system the forward visual field where the target stimulus produces a consistent reaction (fixation of the target with saccadic movements of the head) is only 50-60[degrees] (Tenodera australasiae, Prete et al.