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Smooth pursuit information


Predictive smooth pursuit for a sinusoidal target movement

In the scientific study of vision, smooth pursuit describes a type of eye movement in which the eyes remain fixated on a moving object. It is one of two ways that visual animals can voluntarily shift gaze, the other being saccadic eye movements. Pursuit differs from the vestibulo-ocular reflex, which only occurs during movements of the head and serves to stabilize gaze on a stationary object. Most people are unable to initiate pursuit without a moving visual signal. The pursuit of targets moving with velocities of greater than 30°/s tends to require catch-up saccades. Smooth pursuit is asymmetric: most humans and primates tend to be better at horizontal than vertical smooth pursuit, as defined by their ability to pursue smoothly without making catch-up saccades. Most humans are also better at downward than upward pursuit.[1] Pursuit is modified by ongoing visual feedback.

  1. ^ Grasse, K. L; Lisberger, S. G (1992). "Analysis of a naturally occurring asymmetry in vertical smooth pursuit eye movements in a monkey". Journal of Neurophysiology. 67 (1): 164–79. doi:10.1152/jn.1992.67.1.164. PMID 1552317.

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Smooth pursuit

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In the scientific study of vision, smooth pursuit describes a type of eye movement in which the eyes remain fixated on a moving object. It is one of two...

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Pretectal area

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particular the NOT, are involved in coordinating eye movements during smooth pursuit. These movements allow the eye to closely follow a moving object and...

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Human eye

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relatively easy, though the eyes will often make saccades to keep up. The smooth pursuit movement can move the eye at up to 100°/s in adult humans. It is more...

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Saccade

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of fixation in the same direction. In contrast, in smooth-pursuit movements, the eyes move smoothly instead of in jumps. The phenomenon can be associated...

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Nystagmus

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movements, while nystagmus is characterized by the combination of a smooth pursuit, which usually acts to take the eye off the point of focus, interspersed...

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Visual processing abnormalities in schizophrenia

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smooth pursuit. Saccades are very rapid and precise eye movements between two positions, and are important in establishing fixation. Smooth pursuit on...

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Eye movement

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three types of voluntary eye movement to track objects of interest: smooth pursuit, vergence shifts and saccades. These types of movements appear to be...

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Frontal eye fields

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lesion of the FEF causes conjugate gaze towards the lesion. Saccade Smooth pursuit Supplementary eye fields IPS / LIP "Frontal Eye Field--Scholarpedia"...

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Object permanence

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Chou IH, Lisberger SG (2003). "Evidence for object permanence in the smooth-pursuit eye movements of monkeys". J. Neurophysiol. 90 (4): 2205–2218. doi:10...

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Optokinetic response

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exhibit smooth pursuit nonetheless have slow nystagmus during OKR (though in humans, it is possible to substitute slow nystagmus for smooth pursuit during...

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Illusory palinopsia

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body movements, which are present in saccadic suppression, blinking, smooth pursuit, etc. Illusory palinopsia may occur during a migraine aura, as do other...

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Conjugate eye movement

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in any direction, and can accompany both saccadic eye movements and smooth pursuit eye movements. Conjugate eye movements are used to change the direction...

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Horizontal gaze palsy

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smooth pursuit, while lesions in the parietal-occipital-temporal region or posterior parietal cortex reduce the amplitude and speed of smooth pursuit...

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Flocculus

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dose-dependent effects of alcohol on pursuit movements. Bilateral lesions of the flocculus reduce the gain of smooth pursuit, which is the steady tracking of...

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Vestibulocerebellar syndrome

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combination of ocular abnormalities including nystagmus, poor or absent smooth pursuit (ability of the eyes to follow a moving object), strabismus (misalignment...

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Motion blur

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Saccadic masking makes motion blur during a saccade invisible. Similarly, smooth pursuit allows the eye to track a target in rapid motion, eliminating motion...

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Eye tracking

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The resulting series of fixations and saccades is called a scanpath. Smooth pursuit describes the eye following a moving object. Fixational eye movements...

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Chaos theory

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2008-01-17. Huberman, B.A. (July 1987). "A Model for Dysfunctions in Smooth Pursuit Eye Movement". Annals of the New York Academy of Sciences. 504 Perspectives...

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Jacqueline Gottlieb

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Gottileb used neural recordings to investigate frontal eye fields and smooth pursuit eye movements. Such movements are slow movements that are design to...

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Superior colliculus

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object, with eye movements only to compensate for movements of the head; smooth pursuit, in which the eyes move steadily to track a moving object; saccades...

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Field sobriety testing

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each eye, which gives six clues for this test. The clues are: lack of smooth pursuit of the eyes, distinct and sustained nystagmus at the eyes' maximum deviation...

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Abducens nerve

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eye movement in general. Cortical control of eye movement (saccades, smooth pursuit, accommodation) involves conjugate gaze, not unilateral eye movement...

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Sense of balance

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Lesions of the Oculomotor Cerebellar Vermis on Eye Movements in Primate: Smooth Pursuit." 01 Apr. 2000 Klier, Eliana M., and Hongying Wang. "Interstitial Nucleus...

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Bromazepam

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on signal detection performance, digit symbol substitution test and smooth pursuit eye movements". Neuropsychobiology. 20 (2): 91–95. doi:10.1159/000118481...

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Leon Festinger

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Sedgwick, H. A., & Holtzman, J. D. (1976). Visual-perception during smooth pursuit eye-movements. Vision Research, 16(12), 1377–1386. Festinger, L., &...

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The Pursuit of Happyness

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The Pursuit of Happyness is a 2006 American biographical drama film directed by Gabriele Muccino and starring Will Smith as Chris Gardner, a homeless...

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Trochlear nerve

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eye movement in general. Cortical control of eye movement (saccades, smooth pursuit, accommodation) involves conjugate gaze, not unilateral eye movement...

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Binocular vision

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version eye movements, usually described by their type: saccades or smooth pursuit (also nystagmus and vestibulo–ocular reflex). Or they are disjunctive...

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