Horizontal saccades saccades eye movements. Medical search. Frequent questions

However, sometimes a patient exhibits an abduction nystagmus in both eyes, indicating evidence of a conjugate gaze palsy. (wikipedia.org)
A nystagmus is a back and forth "jerk" of the eye when attempting to hold a gaze in one direction. (wikipedia.org)
Eye movement recordings from 43 children with delayed reading, two with nystagmus, two with strabismus, and two with unsuccessful calibration were excluded from the analysis. (cardiff.ac.uk)
Efferent visual pathway lesions can create a perception of oscillopsia, a visual disturbance in which objects appear to jiggle or move owing to nystagmus (involuntary eye movements). (medscape.com)
Quantitative characterization of saccade parameters, saccadic intrusions (SI), and nystagmus was performed. (unisi.it)
Horizontal and vertical spontaneous jerk nystagmus, gaze-evoked, and rebound nystagmus were evident. (unisi.it)
Conclusion: Slow eye movements accompanying saccades, SI, and cerebellar nystagmus are frequently seen in AT patients, additionally our ATLD patients showed the presence of fast and hypermetric saccades suggesting damage of granule cell-parallel fiber-Purkinje cell synapses of the cerebellar vermis. (unisi.it)
NYSSTAR II is the essential tool to study the various functions of balance, namely the oculomotricity (ocular saccades, pursuit, optokinetic nystagmus) and the study of the vestibular system (spontaneous and positional nystagmi, rotary tests, caloric tests. (nih.gov)
The horizontal saccadic eye movements, optokinetic nystagmus, saccadic eye movement evoked potentials as well as saccadic eye movement related potentials we recorded in the groups of outpatients suffering from depressive symptoms and panic disorder respectively. (nel.edu)
Nystagmus is defined as the involuntary, periodic rhythmic ocular oscillation of the eyes that can either be physiologic (may not affect vision) or pathologic. (medscape.com)
[ 1 ] Nystagmus typically includes two movements: a slow first movement of the eye away from the visual target followed by a second, corrective movement that brings the eye back to the visual target. (medscape.com)
[ 1 ] Conversely, if the second corrective movement is slow, the nystagmus is termed pendular nystagmus and is commonly characterized with sinusoidal oscillations that are approximately of equal amplitude and velocity. (medscape.com)
Many forms of acquired nystagmus may also be caused by disruptions of visual fixation, the vestibulo-ocular reflex and the mechanism that makes it possible to hold the gaze at eccentric eye positions. (medscape.com)
To understand the mechanisms by which nystagmus may occur, it is important to discuss the means by which the nervous system maintains steady position of the eyes. (medscape.com)
A disorder affecting any of the three components involved in maintaining the steady positioning of the eyes (ie, visual fixation, the vestibulo-ocular reflex or the neural integrator) may result in nystagmus. (medscape.com)
He has bilateral limitation of adduction, with slowed adducting saccades and dissociated abducting nystagmus, with exotropia. (neuroophthalmology.ca)
The dissociated abducting nystagmus reflects an adaptive change, increasing the innervation to both the weak adducting eye and the strong abducting movement of the other eye, resulting in an overshoot of abduction followed by a drift back to center because of pulse-step mismatch. (neuroophthalmology.ca)
Dissociated nystagmus of this sort is not specific for INO, as it can be seen with other ocular motor palsies, particularly when the unaffected eye has impaired vision for other reasons. (neuroophthalmology.ca)
He investigated vertical and horizontal directional biases of fixational eye movements (i.e. jerk nystagmus) found in amblyopia, latent nystagmus, and dissociated vertical deviation (DVD), that were related to a postnatal developmental biases of a reflex optokinetic stabilization reflex (i.e. (berkeley.edu)
These nystagmus disorders were the result of a deficit of binocular cortical neurons that relayed motion signals to the midbrain centers, such as nucleus of the optic tract, that control reflex following and fixation eye movements. (berkeley.edu)

Pathological vHIT findings (low vestibulo-ocular reflex gain and re-fixation saccade), which mainly affected the posterior SCC, were more common in the s-BPPV group than in the i-BPPV group (41.9 and 0%, respectively). (frontiersin.org)
Methods: Saccade dynamics, metrics, and visual fixation deficits were investigated in two Italian adult siblings with genetically confirmed ATLD. (unisi.it)
Each of these saccades ends with a fixation, or a temporary snapshot of the text within you focus area (approx. (huffpost.com)
To demonstrate this, close one eye, place a fingertip on top of that eyelid, and then slowly scan a straight horizontal line with your other eye-you will feel distinct and separate movements and periods of fixation. (huffpost.com)
You must use conditioning drills to increase horizontal peripheral vision span and the number of words registered per fixation. (huffpost.com)
Untrained subjects use central focus but not horizontal peripheral vision span during reading, foregoing up to 50 percent of their words per fixation (the number of words that can be perceived and "read" in each fixation). (huffpost.com)
Three mechanisms are involved in maintaining foveal centration of an object of interest: fixation, the vestibulo-ocular reflex, and the neural integrator (which allows for gaze holding in extreme, or eccentric, eye positions). (medscape.com)
Fixation in the primary position involves the visual system's ability to detect drift of a foveating image and signal an appropriate corrective eye movement to refoveate the image of regard (ie, move the image to the central 1-2º of the visual field where visual acuity is highest). (medscape.com)
In order to address this question we tested blinks elicited before the target onset of saccades and pursuit and compared the results to the gap effect: if a fixation light is extinguished for several hundred milliseconds, the reaction time (latency) for subsequent saccades or smooth pursuit eye movements is decreased. (uni-luebeck.de)
In one-third of the trials (smooth pursuit or saccades) the fixation light was extinguished for 200 ms before stimulus onset (gap condition), and in another third of the trials reflexive blinks were elicited by a short airpuff before the stimulus onset (blink condition). (uni-luebeck.de)

Conjugate gaze palsies are neurological disorders affecting the ability to move both eyes in the same direction. (wikipedia.org)
Symptoms of conjugate gaze palsies include the impairment of gaze in various directions and different types of movement, depending on the type of gaze palsy. (wikipedia.org)
A patient may be diagnosed with a conjugate gaze palsy by a physician performing a number of tests to examine the patient's eye movement abilities. (wikipedia.org)
Conjugate gaze palsies can be classified into palsies affecting horizontal gaze and vertical gaze. (wikipedia.org)
Binocular eye movements are either conjugate (versions) or disconjugate (vergences). (medscape.com)

Traditionally, the caloric test evaluates the vestibulo-ocular reflex (VOR) function of the horizontal SCC using non-physiological stimulus within the frequency range of 0.002-0.004 Hz ( 8 ). (frontiersin.org)
We explored the characteristics of her ocular tremor during voluntary eye movements, seeking insight on the role of the cerebellum on tremorogenesis. (biomedcentral.com)
Binocular diplopia resolves with either eye being closed and indicates ocular misalignment as an underlying problem. (eyewiki.org)
17. Which ocular diagnoses involving the anterior segment of the eye should be considered when a patient complains of transient monocular blurring of vision? (stanford.edu)

This damage normally happens in the oculomotor nucleus of the midbrain As in horizontal saccadic palsy, the saccades are stopped or slowed from the disrupted pathway, only in this case the signal is disrupted before it reaches the PPRF. (wikipedia.org)
Combination of movements of the eye and of the head allow to run specific oculomotor tests. (nih.gov)
Several oculomotor deficits have been described for Parkinson's disease (PD) including hypometric saccades, impaired smooth pursuit initiation and decreased ability of making saccades to remembered or predicted target locations, however, little is known about vertical OKN. (arvojournals.org)
His PhD thesis was the first application of the linear systems analysis with the modulation transfer function to quantify visual loss in amblyopia, and the first to link arrested developmental components of oculomotor functions with fixational eye movements in amblyopia. (berkeley.edu)
The models incorporate oculomotor neural plasticity, controlled by the cerebellum, with a negative feedback servo control system to illustrate how context specific adaptation of horizontal, vertical and cyclo vergence movements underlie the rehabilitation of motor anomalies including non-concomitant strabismus and non-concomitant vergence biases, such as phorias, produced, for example, by optical prismatic distortions in anisometropic spectacles. (berkeley.edu)

An understanding of gaze promotes the development of both saccades and pursuits that allow individuals to participate in their activities of daily life. (carrickinstitute.com)
Aberrant abilities to stabilize the eyes associated with pathological saccades, pursuits and vestibular eye movements may be evaluated at the bedside. (carrickinstitute.com)

A saccadic eye movement can be triggered by either visual or auditory stimuli. (uconn.edu)
In this work, saccades induced by visual, auditory and auditory-visual bisensory stimuli that provided in a horizontal plane were recorded and analyzed. (uconn.edu)
Saccade characteristics were investigated, and the results of saccadic eye movements elicited by the three different stimuli types were compared. (uconn.edu)
Processing of the stimuli from the visual cortex occurs in three dozen different regions of the brain by modules that detect edges, vertical, horizontal, and on a slant. (luminous-landscape.com)

The recruitment of saccades may be utilized because of the longer period of diplopia resulting from slower vergence movements. (njit.edu)
Vertical vergence movements may also occur (ie, one eye moving upward or the other eye moving downward relative to the contralateral eye). (medscape.com)

Velocity gain, proportion of smooth pursuit, and the number and amplitude of saccades during smooth pursuit were calculated for the remaining participants. (cardiff.ac.uk)
Saccade amplitude transition function (ATF) and response latency indicated the saccade programming mechanism. (longdom.org)
Blinks executed during eye movements affect kinetic eye movement parameters, e.g., peak velocity of saccades is decreased, their duration is increased, but their amplitude is not altered. (uni-luebeck.de)
Saccade amplitude, peak velocity, and duration were not different in the three conditions. (uni-luebeck.de)
There was also no difference in blink amplitude and duration of pupil occlusion in the blink condition, neither in saccades nor in smooth pursuit. (uni-luebeck.de)

Ductions are monocular eye movements. (medscape.com)
Professor Schor was a pioneer in the study of abnormal monocular eye movements in amblyopia. (berkeley.edu)

Adaptive shortening of a saccade influences the metrics of other saccades withina spatial window around the adapted target. (pisavisionlab.org)

This occurs because pathways controlling saccadic movements are disrupted by the lesion and only slow movements controlled by a different motor pathway are unaffected. (wikipedia.org)
This can also cause slowed horizontal saccadic movements and failure for the eye to reach its target location during saccades. (wikipedia.org)
You do not read in a straight line, but rather in a sequence of saccadic movements (jumps). (huffpost.com)

Hence, the purpose of this study is to assess whether the frequency of saccades within vergence responses are correlated with vergence peak velocity. (njit.edu)
When the vergence peak velocity was slow, a greater number of saccades was observed. (njit.edu)
An increased prevalence of saccades was observed in vergence responses with reduced peak velocity, compared to responses with greater peak velocity. (njit.edu)
Prior research supports that saccades increase the peak velocity of vergence during combined vergence and saccadic tasks. (njit.edu)

Parameter estimations were calculated using the system identification technique for saccade parameters and neural inputs. (longdom.org)

The present study now aims to compare vertical and horizontal spatial associations in mental arithmetic. (researchgate.net)
The analysis of the problem solving performances revealed a motion-arithmetic compatibility effect for spatial actions along both the horizontal and vertical axes. (researchgate.net)
spatial resolution = 0.1 deg and temporal resolution = 60 Hz) was used to non-invasively measure horizontal and vertical eye movements in our patient. (biomedcentral.com)

If you're using large images to communicate information, a horizontal card produces a scattered scanning flow because it requires more eye fixations. (medium.com)
To validate this, it's important to study eye movements on similar products to observe common patterns in fixations and saccades. (snappymob.com)
This study used an empirical approach to explore the time taken for web users to acquire website navigation menu items by tracking their eye fixations in these areas. (uxpa.org)

Methods: Eye movements were recorded in 169 children (4-11 years) and 10 adults, while a customized, animated stimulus was presented moving horizontally and vertically at 6°/s and 12°/s. (cardiff.ac.uk)
however, saccades occur during the vergence movement even though the stimulus should not stimulate a saccadic response. (njit.edu)
Stimulus direction and the three conditions were randomized for saccades and smooth pursuit separately. (uni-luebeck.de)

The average vergence peak velocities were inversely correlated to the number of saccades observed within the transient portion defined as after the latency to 400. (njit.edu)
In contrast, the latency of the saccades in the gap condition was decreased by 39 ms, but not in the blink condition. (uni-luebeck.de)
The latency reduction of smooth pursuit, but not of saccades, may neither be explained by the brief pupil occlusion nor by visual suppression, warning signals, or the startle response. (uni-luebeck.de)

Eye movement abnormalities included slow eye movements that preceded the initial saccade. (unisi.it)
We present a simplified review the anatomy of horizontal and vertical saccades, discuss practical aspects of their examination, and review saccadic abnormalities in hyperkinetic and hypokinetic movement disorders. (hmto-hnas.com)
Further, we provide an algorithm illustrating the value of saccadic abnormalities in the differential diagnosis of the movement disorders patient. (hmto-hnas.com)
Abnormalities and disturbances of saccadic and pursuit eye movements were studied in several mental disorders and diseases. (nel.edu)

Visually guided saccades were compared with those of 40 healthy subjects. (unisi.it)
Horizontal step-ramp smooth pursuit of 20 deg/s was elicited in one session, or 5 deg horizontal visually guided saccades in another experimental session. (uni-luebeck.de)

Affected individuals may experience problems with how they see the world (afferent visual pathway symptoms) and/or how smoothly and synchronously their eyes move together (efferent visual pathway disorders). (medscape.com)
Because patients with MS and other CNS inflammatory disorders who have visual symptoms often seek ophthalmic attention, eye care experts play a vital role in the localization and diagnosis of these conditions. (medscape.com)
Therapy for MOVEMENT DISORDERS, especially PARKINSON DISEASE, that applies electricity via stereotactic implantation of ELECTRODES in specific areas of the BRAIN such as the THALAMUS. (lookformedical.com)
This clinical applications series is an advanced clinical experience that expands the clinicians ability to utilize eye movements to understand, diagnose and treat disorders of the nervous system. (carrickinstitute.com)
Saccades are one of the most useful types of eye movements in the evaluation of the movement disorders patient. (hmto-hnas.com)
The goal is to provide a practical guide to bedside evaluation of saccades in the context of the movement disorders patient. (hmto-hnas.com)
Central and peripheral correlates of eye movements in selected mood disorders. (nel.edu)

A saccade detecting algorithm was utilized to compute the percentage of saccades present within all vergence responses. (njit.edu)
This may in part explain the increased presence of saccades within vergence responses with reduced peak velocities. (njit.edu)
The models also illustrate how binocular eye alignment is adjusted with sustained vergence and accommodation responses by an adaption mechanism. (berkeley.edu)

Eye movements were recorded in 15 PD patients and 15 aged-matched controls while performing vertical and horizontal OKN (at 20°/s and 40°/s using 50x60° field), smooth pursuit (linear velocity at 20°/s and 40°/s) and a saccadic task (10° and 20° centrifugal and centripetal steps). (arvojournals.org)
This reflex allows a stable image to be maintained on the retina during rapid head movements by rotating eyes in the opposite direction of the head movement, with a velocity that is equal to the head movement velocity. (medscape.com)

[ 4 , 5 , 6 ] Fusional convergence and divergence are optomotor reflexes that are designed to position the eyes such that the image of regard falls on the fovea of each eye. (medscape.com)
Affected individuals often have upper limb involvement, dysarthria, scoliosis, abnormal eye movements, and sensory neuropathy with decreased reflexes. (nih.gov)

Prolonged reaction times, excessive direction errors, and no expression of saccades [25] . (aao.org)

Wemeasured localization judgements by asking subjects to localize a probe flashedbefore saccade onset. (pisavisionlab.org)
Possible PSP requires the presence of a gradually progressive disorder with onset at age 40 or later, either vertical supranuclear gaze palsy or both slowing of vertical saccades and prominent postural instability with falls in the first year of onset, as well as no evidence of other diseases that could explain these features. (neurology.org)

For example, visuospatial attention engages a frontoparietal network including the frontal eye fields (FEFs), which modulate activity in visual sensory areas to enhance the representation of an attended visual object. (frontiersin.org)
Stereoscopic depth cues provide information about distances of objects in near space as a function of their relative horizontal positions in the visual field. (britannica.com)
However, as early as by two to three months of age, infants show predictive visual eye tracking when following an object moving back and forth in front of them (von Hofsten & Rosander, 1997). (openedition.org)
The midline regions of the cerebellum, the vermis and flocculonodular lobe , are involved in comparing visual information, equilibrium, and proprioceptive feedback to maintain balance and coordinate movements such as walking, or gait , through the descending output of the red nucleus (Figure 16.15). (foobrdigital.com)
3 First, the image on the primary visual cortex is jumping every second or so as our eyes dart from point to point (saccades) (Fig. 1). (luminous-landscape.com)
We previously showed that macaque caudal intraparietal (CIP) area neurons possess robust 3D visual representations, carry choice- and saccade-related activity, and exhibit experience-dependent sensorimotor associations (Chang et al. (elifesciences.org)
Together, the results explicate parallel representations, hierarchical transformations, and functional associations of visual and saccade-related signals at a key juncture in the 'where' pathway. (elifesciences.org)
Professor Schor also investigated how the two eyes combine monocular visual directions to yield single vision (fusion), and binocular perception of direction and depth (stereopsis). (berkeley.edu)
13. A patient complains of loss of visual field in one eye, what should be ruled-out on examination? (stanford.edu)
While there is mixed or no evidence that the aforementioned visual skills are superior in cricket players compared to non-players, comparisons of eye and head movements and gaze tracking have revealed consistent differences between elite cricket batters and sub-elite batters. (dntb.gov.ua)

Signs of a person with a gaze palsy may be frequent movement of the head instead of the eyes. (wikipedia.org)
Someone with a nonselective horizontal gaze palsy may slowly rotate their head back and forth while reading a book instead of slowly scanning their eyes across the page. (wikipedia.org)
One other type of gaze palsy is a horizontal saccadic palsy. (wikipedia.org)
In most cases, the gaze palsy can simply be seen by inability to move both eyes in one direction. (wikipedia.org)
Niemann-Pick type C is an uncommon neurodegenerative lysosomal storage disorder that can cause a progressive neuropsychiatric syndrome associated with supranuclear vertical gaze palsy and a movement disorder. (bmj.com)

The second addressed the question whether the same underlying neural controller drives both eye- and head motor systems. (openedition.org)
The third mechanism is the neural integrator, which is required to maintain a steady gaze in extreme or eccentric eye positions. (medscape.com)

Monocular diplopia persists when the unaffected eye is closed, but will resolve when the affected eye is closed. (eyewiki.org)
Thus, the key and differentiating question between monocular and binocular diplopia is: "Does the double vision resolve with closing EITHER eye? (eyewiki.org)
because if the patient happens to close the affected (monocular diplopia) eye then the response might lead the examiner to conclude that the diplopi is binocular when in fact it is monocular. (eyewiki.org)
Binocular horizontal diplopia (images displaced horizontally) is usually due to disease of the medial or lateral rectus muscle, the neuromuscular junction, or the nerves supplying these muscles (e.g., cranial nerves III or VI). (eyewiki.org)
Diplopia worse with distance is more typical of sixth nerve palsy because of difficulty with divergence at distance of the eyes while diplopia worse at near is more suggestive of medial rectus palsy because of the need for convergence of the eyes at near. (eyewiki.org)
However, if there is muscle restriction (e.g., thyroid eye disease, orbital fracture, orbital myositis) then the diplopia may be worse in the opposite field of action of the restricted muscle. (eyewiki.org)
3 years prior he had had sudden horizontal diplopia in left gaze and imbalance. (neuroophthalmology.ca)
Now he presents with horizontal diplopia, worse at near and in lateral gaze right or left, but without other neurologic symptoms. (neuroophthalmology.ca)

This case is an unusual presentation of a cat's eye Adie-like pupil as the harbinger for ICE syndrome. (stanford.edu)

We investigated the saccadic adaptation field andassociated localization changes for saccade lengthening, or outward adaptation. (pisavisionlab.org)

Although more rare than horizontal, one-and-a-half syndrome from damage to the paramedian pontine reticular formation and the medial longitudinal fasciculus can be shown to affect vertical gaze. (wikipedia.org)
This can cause impairment of vertical gaze, allowing only one eye to move vertically. (wikipedia.org)
Key structures involved in horizontal and vertical gaze allow the clinician to physiologically test specific areas of the integrated nervous system with direction towards clinical applications. (carrickinstitute.com)

However, infants of both age groups displayed more extensive head movements and less accuracy compared to adults. (openedition.org)
Infants also showed less developed timing between head movements and vertical object motion, supporting the argument that both eye- and head tracking have a common developmental trajectory. (openedition.org)

The magnitude of innervation is determined by the fixating eye, which means that the angle of deviation between eyes ( strabismus ) may vary depending on which eye is fixating. (medscape.com)
The primary deviation is misalignment, with the normal eye fixating. (medscape.com)
If the paretic eye fixates, the ensuing secondary deviation is typically larger than the primary deviation. (medscape.com)
It increased with increases of the horizontal component of the saccade andremained largely constant with deviation of the vertical component of the saccade.Mislocalization of probes inside the adaptation field was correlated with the amountof adaptation of saccades to the probe location. (pisavisionlab.org)

Convergence is movement of both eyes nasally, and divergence is movement of both eyes temporally. (medscape.com)
Intriguingly, the time course of saccade-related activity in CIP aligned with the temporally integrated V3A output. (elifesciences.org)

In Experiment 2, instead of instructing to perform active body movements, participants calculated while the problems moved in one of the four relative directions on the screen. (researchgate.net)
We analysed the eye-tracking data of 147 participants as they used a total of 15 separate website navigation menus to complete key activities. (uxpa.org)

Since the lateral rectus controls movement away from the center of the body, a lesion in the abducens nucleus disrupts the pathways controlling outward movements, not allowing the right eye to move right and the left eye to move left. (wikipedia.org)
Adaptation and mislocalization fields for saccadic outward adaptation in humans,Journal of Eye Movement Research, 4 (3), 1-18. (pisavisionlab.org)

These palsies can affect gaze in a horizontal, upward, or downward direction. (wikipedia.org)
Performances in additions was impaired while making downward compared to upward movements as well as when moving left compared to right and vice versa in subtractions. (researchgate.net)
Stan highlighted the importance of making use of horizontal space and minimizing downward scrolling on desktop experiences. (snappymob.com)

Structures that are critical for eye-movement control are located in the medulla and promote integration from the vestibular system and from the complex inferior olivary nuclear system. (carrickinstitute.com)

The cranial nerve VI also has interneurons connecting to the medial rectus, which controls horizontal eye movement towards from the midline of the body. (wikipedia.org)
As seen in horizontal saccadic palsy, the impairment of the contralateral side gaze is caused by the disrupted pathways coming from the PPRF, while the "half" impairment is from the signal passing through the medial longitudinal fascicles not being able to reach its target. (wikipedia.org)
Yoke muscles are the primary muscles in each eye that accomplish a given version (eg, for right gaze, the right lateral rectus and left medial rectus muscles). (medscape.com)
Medial and lateral rectus muscles have only horizontal actions. (medscape.com)
The medial rectus muscle is the primary adductor of the eye, and the lateral rectus muscle is the primary abductor of the eye. (medscape.com)
Blepharophimosis (short horizontal palpebral fissures, i.e. decreased distance between the medial and lateral canthi) is commonly found and easy to measure [18] . (aao.org)
Telecanthus (increased distance between the medial eye canthi) is commonly found in FAS [18] [22] . (aao.org)

The program includes an in-depth understanding of eye movements and brain control as well as eye movements and brain influences. (carrickinstitute.com)

Accommodative convergence is convergence of the eyes stimulated by accommodating or focusing on a near target. (medscape.com)

For example, a person with a horizontal saccadic palsy may jerk their head around while watching a movie or high action event instead of keeping their head steady and moving their eyes, which usually goes unnoticed. (wikipedia.org)

Saccades are very fast eye movements that allow the eyes to quickly move from one target or image to another. (uconn.edu)
Wemeasured the adaptation field for two different saccade adaptations (14 deg to 20deg and 20 deg to 26 deg) by testing transfer to 34 different target positions. (pisavisionlab.org)
Processing in the midline regions targets movements of the axial musculature, whereas the lateral regions target movements of the appendicular musculature. (foobrdigital.com)

This is where the cranial nerve VI leaves on its way to the Lateral rectus muscle, which controls eye movement horizontally away from the midline of the body. (wikipedia.org)

20. What should be considered in a patient who has eye or brow pain with transient monocular vision loss? (stanford.edu)

2002), it was shown that 9-month-old infants' eye tracking was functional, i.e. the infants were able to negotiate the two-dimensional motion. (openedition.org)
2005), eye tracking in 6- to 12 moth old infants was found to be functional through catch-up saccades and thus could be extended to a nonlinear motion. (openedition.org)

NYSSTAR IU is also equipped with gyroscope to record movements of the patient's head. (nih.gov)

Second, each of our eyes has a significant blind spot in the place where the optic nerve leaves the retina. (luminous-landscape.com)

The horizontal scrolling requirement is not intended to apply to small-screen devices where long words may be displayed on a single line and require users to scroll horizontally. (w3.org)

The interactions between the cerebellum and the cerebral cortex are responsible for complex human motion including eye movements. (carrickinstitute.com)

strabismus often increases in the field of action of a weak eye muscle. (medscape.com)
Strabismus (abnormal alignment of eyes, figure 3) is non-specific, but commonly found in FAS [15] . (aao.org)
The clinician should inquire about prior strabismus, a ''lazy" or amblyopic eye, patching as a child, childhood eye surgery, and any abnormal head positions. (eyewiki.org)

abstract = "In a natural environment, saccade and vergence eye movements shift gaze in different directions and distances. (njit.edu)

Horizontal gaze palsies are known to be linked to Progressive Scoliosis. (wikipedia.org)

Lesions anywhere in the abducens nucleus, cranial nerve VI neurons, or interneurons can affect eye movement towards the side of the lesion. (wikipedia.org)

Eye movement data were analyzed based on a 3rd-order linear horizontal saccadic eye movement model, where the inputs to the muscle were agonist and antagonist active-state tensions that were described by pulse-slide-step waveforms with a post inhibitory rebound burst (PIRB) based on a timeoptimal controller. (longdom.org)
The study described here expanded our previous work and further supported the muscle model as well as the theory of the time-optimal saccade controller under physiological constraints. (longdom.org)

Anatomy24

Organisms5

Diseases11

Chemicals and Drugs2

Analytical, Diagnostic and Therapeutic Techniques and Equipment15

Psychiatry and Psychology33

Phenomena and Processes34

Information Science3

Health Care2

Nystagmus20

Fixation10

Conjugate5

Ocular4

Oculomotor5

Pursuits2

Stimuli4

Vergence movements2

Amplitude5

Monocular eye movements2

Metrics1

Saccadic movements3

Peak velocity4

Parameters1

Spatial3

Fixations3

Stimulus3

Latency3

Abnormalities4

Visually2

Disorders7

Responses3

Velocity2

Reflexes2

Reaction1

Onset2

Visual10

Gaze palsy5

Neural2

Diplopia8

Pupil1

Localization1

Vertical gaze3

Head movements2

Deviation4

Temporally2

Participants2

Outward2

Downward3

Vestibular system1

Medial7

Influences1

Convergence of the eyes1

Jerk1

Target3

Lateral rectus1

Transient1

Functional2

Patient's1

Optic1

Horizontally1

Cerebral cortex1

Strabismus3

Abstract1

Scoliosis1

Neurons1

Controller2