Simultaneous eye movement measurements. Medical search. Frequent questions

Strabismus, often referred to as "crossed eyes" or "lazy eye," is a common visual disorder affecting millions worldwide. (nih.gov)
Strabismus is derived from a Greek word that translates to "eyes looking obliquely" and means misaligned eyes. (nih.gov)
Both of these terms describe eyes without any manifest strabismus. (nih.gov)
Based on the age of onset of strabismus, it can be defined as infantile, when the deviation of eyes has been noticed at or before 6 months of age. (nih.gov)
Retrospective review of 32 eyes of 22 patients with myopic strabismus fixus who had undergone union suture of superior rectus (SR) and lateral rectus (LR) with or without scleral fixation, and follow-up longer than 6 months at Hong Kong Eye Hospital from 2006 to 2013. (hindawi.com)
Myopic strabismus fixus, also known as acquired progressive esotropia associated with severe myopia (APEASM), or heavy eye syndrome, is an adult onset esotropia associated with high axial myopia, typically described as progressive esotropia and hypotropia associated with restricted elevation and abduction of variable degree and severity. (hindawi.com)
As scleral fixation on pathological myopic eyes could impose potential risk of scleral perforation, our study aims to report the surgical techniques and evaluates and compares the results of patients with myopic strabismus fixus patients who had undergone union suture of SR and LR with or without scleral fixation. (hindawi.com)

Key physiological methods for monitoring and measuring changes during sleep include electroencephalography (EEG) of brain waves, electrooculography (EOG) of eye movements, and electromyography (EMG) of skeletal muscle activity. (wikipedia.org)
Our dataset, EEGEyeNet, consists of simultaneous Electroencephalography (EEG) and Eye-tracking (ET) recordings from 356 different subjects collected from three different experimental paradigms. (openreview.net)

During the initial phase of voluntary eyelid closure, the eyes move in a three-dimensional direction that is consistent with a pulselike innervation of the inferior rectus muscle. (arvojournals.org)
The underlying pathology is the absence of the sixth cranial nerve at the nuclear or supranuclear level and/or maldevelopment of the nerve itself or the motor neurons of the abducens nucleus and aberrant innervation of the lateral rectus muscle, which is mainly responsible for the abnormal eye movements. (oftalmoloji.org)
1 There is a simultaneous innervation of the medial and lateral rectus muscles and the latter is partially innervated by the branches of the oculomotor nerve. (oftalmoloji.org)

For this purpose, this project will use advanced technologies in neuroimaging (MRI), electrophysiology (EEG), and eye-tracking, as well as objective and quality measurements of several physical and cognitive health outcomes. (biomedcentral.com)
To do so, psychologists studied, in detail, the physiology and anatomy of the eye and the cognitive operations associated with the visual system. (eyeware.tech)
The effects of ECT on neuronal oscillatory pattern and phase synchronization, and the relationship between clinical response or cognitive change and electroencephalogram (EEG) measurements remain elusive. (lifeafterect.com)
Moreover, the relationship between changes in clinical response and/or cognitive function and changes in EEG measurements remains elusive. (lifeafterect.com)

It can be due to refractive error, binocular fusion abnormalities, or neuromuscular anomalies of ocular movements. (nih.gov)
Two phases of eye movements associated with blinking can be distinguished: an initial dynamic ocular rotation that occurs with every blink and a subsequent sustained phase 1 that occurs only when closure of the eyelid is prolonged. (arvojournals.org)
To investigate the three-dimensional ocular kinematics during the initial phase of blinks, we recorded eye movements in healthy human subjects with dual search coils that were modified to exclude torsional artifacts. (arvojournals.org)

In five healthy human subjects, eye movements about all principal axes of rotation (horizontal, vertical, and torsional) were recorded during voluntary blinks of different durations (as short as possible, 0.83 seconds, and 1.67 seconds) in straight-ahead gaze. (arvojournals.org)
3 measured horizontal and vertical eye movements during blinks at different gaze positions within 10° from straight-ahead gaze. (arvojournals.org)
Using this dataset, we also propose a benchmark to evaluate gaze prediction from EEG measurements. (openreview.net)
Gaze input allows people with severe disabilities to communicate with eyes alone. (researchgate.net)
Overall, eye and gaze tracking technology provide invaluable insight and opportunities. (eyeware.tech)
Additionally, video-based gaze tracking allows the measurement and analysis of pupil size. (eyeware.tech)

By additionally measuring rotation about the torsional axis, the authors investigated whether the three-dimensional rotation of the eye during the early phase of eyelid closure could be assigned to the action of a single extraocular muscle. (arvojournals.org)
To obtain reliable measurement of torsional eye movements with dual search coils during blinks, modification of the annulus is indispensable. (arvojournals.org)
The eye executes a number of movements, such as vergence or torsional. (eyeware.tech)

Our lab develops and uses adaptive optics, eye movement correction and optical microscopy technologies to improve the non-invasive visualization of the retina to the point that individual retinal structure and function and can be visualized at the cellular and even sub-cellular scale. (stanford.edu)
Invited Session V: The eye as a window to systemic and neurodegenerative health: Seeking Answers through a keyhole: Harnessing the Synergy of Dynamic OCT/OCT Angiography and Adaptive Optics SLO for Retinal Assessment of Systemic Disease. (stanford.edu)
En face OCT reflectance images which accompany OCTA studies offer a glimpse of the macrophage-like cellular activity above the retinal surface which responds to systemically instigated vascular events below. (stanford.edu)
We used multiple linear regression to examine relationships between retinal measurements and volumetric brain measures as well as fractional anisotropy (FA) as measure of microstructural integrity of white matter (WM) for different brain regions. (nature.com)

This includes state-of-the-art equipment for measuring eye movements (EyeLink 1000, Tobii Eye Tracker 4c) and other motor movements (Optotrak-3020 System, Zebris Tracking System, Qualisys Motion Capture System), for manipulating visual-proprioceptive information (PHANToM-force feedback device) and for creating virtual environments (HTC Vive). (uni-giessen.de)
My first idea was to create a setup in which participants' eye movements were recorded simultaneously by three trackers: the EyeLink 1000, the SMI RED-m, and the EyeTribe. (pygaze.org)
The EyeLink 1000 is a powerhouse that sports a 1000 Hz sampling rate and a high accuracy and precision, arguably the best video-based eye tracker out there. (pygaze.org)

So simultaneous recordings were out of the question. (pygaze.org)
Five minutes of resting, eyes-closed, 19-lead EEG recordings were obtained before and after a course of ECT. (lifeafterect.com)

The described device is a multifunctional highly efficient customized DLP light engine being capable of serving as an image projector and simultaneously to support range and topography estimation measurements. (mdpi.com)

Data for the 2020 Shared Task on Simultaneous Translation And Paraphrase for Language Education (STAPLE). (duolingo.com)

We provide education and research aimed at proposing new theories to explain various aspects of human mind, including "intellect", "emotion" and "volition" and at developing new measurement and manipulation methods which can lead to innovation and solutions to everyday social problems. (nagoya-u.ac.jp)
In the context of research methods, eye tracking is used for both qualitative and quantitative research. (eyeware.tech)

All subjects underwent complete ophthalmological examination and pupillometry measurements (MonPack One, Vision Monitor System, Metrovision, Perenchies, France) including static and dynamic pupil evaluation. (oftalmoloji.org)
Electroretinograms (ERG) can detect changes in the function of the retina earlier than CERF examination can detect visible changes to the eye. (malamute-health.org)
The most important part of the preoperative physical examination is the assessment of visual acuity, which is done separately for each eye. (medscape.com)
Examination of the eyes by an ophthalmologist is essential to assess for papilledema, which indicates elevated intracranial pressure. (medscape.com)

Lateral movements with changes of direction are common in many team sports. (jssm.org)

I decided to run a few short experiments that could test the basic eye-tracking metrics: point-of-regard estimation accuracy and precision, saccade trajectory and velocity, and changes pupil size. (pygaze.org)

Orthotropia is defined as the correct direction of the eyes under binocular conditions. (nih.gov)
Binocular stereopsis, or stereo vision, is the ability to derive information about how far away objects are, based solely on the relative positions of the object in the two eyes. (nature.com)
Stereo vision is the computation of depth based on the binocular disparity between the images of an object in left and right eyes ( Figure 1 ). (nature.com)
Because this object is not at the fixation distance, its images in the two eyes fall at different locations relative to the fovea, as indicated by the angles L and R . Absolute binocular disparity is defined as the difference between the angles to the fovea in each eye: Δ= R − L . Note that in this figure, angles are exaggerated for clarity. (nature.com)
Most notably, our binocular vision requires that the optic axes intersect, that is, both eyes fixate the same point in space. (nature.com)

An eye tracker for eye movement measurement is also available for your research. (femmarketinghouse.jp)
The number of eye tracker is limited, so please check availability beforehand. (femmarketinghouse.jp)
Relatively recently, a new player came to the eye-tracker market. (pygaze.org)
a portable eye tracker with a never-seen-before price tag of $100. (pygaze.org)
The RED-m is a portable eye tracker manufactured by SensoMotoric Instruments, with a slightly higher sampling rate (120 Hz) and comparable accuracy and precision to the EyeTribe. (pygaze.org)
That is a huge setback: if you want to do a proper, direct comparison of two tracker, you should really do it on the exact same eye movements. (pygaze.org)
If you show a single dot, and a participant is looking at that dot, you want the eye tracker to report that the participant is looking at the dot. (pygaze.org)
The amount of systematic error is referred to as the accuracy of an eye tracker. (pygaze.org)

In addition to psychophysical measurements, a major focus of our department is the modeling of perception and behavior. (uni-giessen.de)
Eye tracking is a crucial technology to help us understand human behavior and the underlying thinking processes. (eyeware.tech)

The fovea is the region with the highest visual acuity in the eye, but it is notably small. (eyeware.tech)

Blood pressure, heart rate, and eye movement provide synchronous physiological data of movie-watching reactions to a certain extent. (frontiersin.org)
The aim of this paper is to provide recommendations pertaining to equipment requirements, study procedures and reporting of data for plethysmographic measurements in infants. (ersjournals.com)
Implementation of these recommendations should help to ensure that such measurements are as accurate as possible and that meaningful comparisons can be made between data collected in different centres or with different equipment. (ersjournals.com)
The program extracts the best data from the X-ray measurements, which it uses to piece together the protein's atom-by-atom structure. (nanowerk.com)
An approach is provided for determining potential movement disorder using sensor data. (justia.com)
Therefore, there is a need for an approach for determining potential movement disorder using sensor data. (justia.com)
Only data from the right eyes of the healthy subjects were included in the statistical analysis for this group. (oftalmoloji.org)
We present a large dataset of synchronised EEG and eye tracking data, together with a benchmark for evaluating eye tracking from EEG. (openreview.net)
Fixations occur when the eye stops to collect visual data. (eyeware.tech)
The eye moves from one object of interest to another with the goal of acquiring new visual data in high resolution. (eyeware.tech)
The CNS integrates all this data, determines the body's spatial orientation, and sends appropriate neural messages to the motor system to activate movements that will maintain equilibrium. (cdc.gov)

What's more, the sensor employs a global shutter that allows simultaneous control of exposure for every pixel. (direporter.com)

Finally, I review the evidence supporting the clinical importance of such measurements. (nature.com)
For later onset prcd, clinical signs (or even eye changes) may not be seen until the dog is 4 years of age or older. (malamute-health.org)

However, automated pupillometry in static and dynamic conditions allows quantitative measurement and may offer more objective information regarding the presence and extent of pupillary involvement in various diseases. (oftalmoloji.org)
The optics of the eye can be thought of as an imperfect microscope objective through which the retina can be observed. (stanford.edu)

Most studies on blink-induced eye movements have been restricted to rotations about the horizontal and vertical axes. (arvojournals.org)
2 described the horizontal and vertical trajectories of the human eye during the entire period of voluntary and reflexive blinks. (arvojournals.org)
4 The visual system simplifies further by considering only potential matches that are at very similar horizontal locations in the two eyes, within a degree or so ( Figure 2 ). (nature.com)
However, the horizontal offset of the eyes together with the laws governing eye movements means that the geometrically possible matches are largely confined to the row at the same vertical position (shaded light grey). (nature.com)

Using a combination of psychophysics, image analysis, computational modeling, eye -/ hand tracking, and fMRI we investigate questions such as: What information does the brain use to estimate and categorize material qualities? (uni-giessen.de)
Therefore we use a variety of approaches such as psychological experiments, social surveys, measurement and manipulations of brain activity, and computer simulation. (nagoya-u.ac.jp)
Schematic experimental scene of the simultaneous brain activity measurement during interactive task. (nagoya-u.ac.jp)
The primary visual cortex of the brain contains neurons receiving information from both eyes. (nature.com)
We present a new dataset and benchmark with the goal of advancing research in the intersection of brain activities and eye movements. (openreview.net)

Device manufacturers and service providers face significant challenges to determine movement disorder via network services. (justia.com)

Is eye tracking used for qualitative or quantitative research? (eyeware.tech)

This method has the further advantage that with suitable adaptations to the equipment, simultaneous measurements of airway resistance can also be obtained. (ersjournals.com)
END ATLAS vertically reflects unique optical equipment, is replications not suitable for brilliant end movement. (petswatches.com)

During cutting maneuvers, for instance, an athlete performs a complex dynamic task to execute a change of movement direction while controlling their balance. (jssm.org)
What's more, with 1MP resolution and high-speed image capture, it also accurately performs 3D distance measurements where multiple subjects overlap. (direporter.com)
Saccades are fast "jumps" that the eye performs between fixations in a static environment. (eyeware.tech)

Typically, both eyes fixate equally while focusing on an object with the head held in the primary position. (nih.gov)

Low tear production may result in aqueous tear deficiency (ATD) and cause dry eye symptoms. (usophthalmic.com)
The Sapphire A Device is an excellent method of screening for dry-eye patients, to measure the upper and lower tear meniscus in patients with aqueous tear deficiency (ATD) dry eye and to determine the most effective meniscus variables for the diagnosis of dry eye. (usophthalmic.com)
Синдроми полігландулярної недостатності Polyglandular deficiency syndromes (PDS) are characterized by sequential or simultaneous deficiencies in the function of several endocrine glands that have a common cause. (msdmanuals.com)

Neuroelectric indices will be measures by electroencephalogram (EEG) and eye-tracking, working memory by n-back task and reading comprehension by a reading task. (biomedcentral.com)

reported a series of 33 eyes of 26 patients underwent muscle belly union without scleral fixation [ 13 ]. (hindawi.com)

Humans, however, simplify the matching problem by imposing severe constraints on our eye movements. (nature.com)

The aim of this paper is to summarize what is currently seen to be good laboratory practice, and to provide recommendations for both users and manufacturers of infant lung function equipment and software with respect to plethysmographic measurements of lung volume and airway resistance in infants. (ersjournals.com)

This requires matching up features in the two eyes, that is, identifying features in the left and right retinas that are both images of the same point in the visual scene. (nature.com)
Visual odometry is using one or more cameras to find visual clues and estimate robot movements in 3D relatively. (mdpi.com)
In other words, eye tracking identifies and monitors a person's visual attention in terms of location, objects, and duration. (eyeware.tech)
As a result, to process detailed visual information of interest, the eye has to move. (eyeware.tech)
As visual intake is possible during smooth pursuit, the movement is relevant for tracking eye movements. (eyeware.tech)
Most importantly, visual eye tracking facilitates the study of visual attention. (eyeware.tech)
The eyes (visual system) provide input regarding the body's orientation within the environment and about motion within the environment. (cdc.gov)

This condition disrupts the normal alignment of the eyes, causing them to point in different directions. (nih.gov)
The efficient chewing is exerted through a coordinated interaction between the mandible, tongue and hyoid movements with the occlusal plane alignment and the masticatory muscle performance 5 . (bvsalud.org)

As a result, it enables slow-motion capture of fast movement within a short time frame. (direporter.com)
The compromise of having a high-resolution central vision and low-resolution peripheral vision is what enables eye tracking technology, to begin with. (eyeware.tech)
The balance system enables us to sense where we are in space and to maintain our posture and equilibrium while we are still and while we are in movement. (cdc.gov)

Eye movements during blinks are associated with a co-contraction of most of the extraocular muscles, 3 4 5 6 7 which in turn leads to a retraction of the eyeball. (arvojournals.org)
Judging from the published figure (Fig. 1 in Ref. 8 ), the inferior rectus muscle showed the most brisk activation of all muscles at the beginning of the eyelid movement. (arvojournals.org)

At the same time, these types of movements challenge knee joint stability and are associated with increased loadings at the anterior cruciate ligament (ACL) (Alentorn-Geli et al. (jssm.org)

This much-anticipated milestone could lead to new treatments for neurological diseases and a better understanding of how the nervous system controls movement, memory, and learning. (nanowerk.com)
However, autoimmune diseases, such as Sjögren syndrome and pemphigus and/or pemphigoid, are associated with dry eyes and generally preclude cosmetic blepharoplasty. (medscape.com)
According to Gelatt's Veterinary Ophthalmology (1999), PRA is a term for a group of hereditary diseases that are characterized by a degeneration or dysplasia (abnormal development) of the photoreceptors at the back of the eye. (malamute-health.org)
This exam has fundamental importance, because most of the dry eye diseases are caused by an insufficiency of lipid layer quantity. (usophthalmic.com)

Some dogs may also develop cataracts secondary to the PRA, seen as an increased cloudiness in the eye. (malamute-health.org)

The health and wellness engine processes and/or facilitates a processing of the movement information to cause, at least in part, a determination of one or more potential movement disorders associated with the user. (justia.com)
Facial nerve disorders compromise tear-film transfer and eye protection if the zygomatic branch is affected. (medscape.com)

A simple assessment can be done by asking patients if their eyes burn or sting when the wind blows. (medscape.com)
The evaluation of the lipid layer is part of your overall Dry Eye Assessment. (usophthalmic.com)
The overall praxis assessment showed significant difference between the groups in three sub-factors: eye-foot coordination (p = 0.022), dissociation of the upper limbs (p = 0.042) and the lower limbs (p = 0.045). (bvsalud.org)

Sleep researchers also use simplified electrocardiography (EKG) for cardiac activity and actigraphy for motor movements. (wikipedia.org)

People with babyish facial features (large eyes, thin eyebrows, large head, curved face) tend to be evaluated as less mature, more innocent, but also as less responsible (Zebrowitz & Montepare, 1992). (thejuryexpert.com)

Damage to the nervous system can cause changes in sensory input (loss of vision, hearing, smell, etc.), can hinder the capacity to control movement and body functions and/or can affect the brain's capacity to treat or store information. (iloencyclopaedia.org)
Balance receptors in the inner ear (the vestibular system) provide information to the CNS about head and body movements. (cdc.gov)

The aim of the present study was to investigate static and dynamic pupillary characteristics in patients with DS and compare the results with those of healthy eyes. (oftalmoloji.org)
reported a series of 26 eyes of 15 patients with silicone band loop myopexy of LR and SR with the use of a scleral tunnel [ 14 ]. (hindawi.com)
Blepharoplasty in patients with dry eyes should be approached cautiously. (medscape.com)
Some authors have suggested that patients with subjectively dry eyes can safely undergo blepharoplasty. (medscape.com)
As an incidental note, patients who can tolerate wearing contact lenses generally do not have dry eyes unless they require frequent use of wetting drops. (medscape.com)

Although REM stands for "rapid eye movement", this mode of sleep has many other aspects, including virtual paralysis of the body. (wikipedia.org)
Methanol can be absorbed into the body by inhalation, ingestion, skin contact, or eye contact. (cdc.gov)

Leveraging this functionality, the sensor is capable of Time of Flight distance measurement. (direporter.com)
Time of Flight (ToF) measurement is a method for determining the distance between a sensor and another object. (direporter.com)

7 ] by joining the muscle bellies of SR and LR results in a sling of muscle that supports the elongated eye, pushing it back into the muscle cone. (hindawi.com)
Owners may also notice that the dog has dilated pupils and an increase in the shininess at the back of the eye. (malamute-health.org)
Studies investigating the effects of ECT on electrophysiological measurements date back to the 1930s. (lifeafterect.com)

The health and wellness engine determines movement information of the one or more reference objects within the one or more sequences of images, wherein the movement information is at least substantially attributable to one or more physical movements of the user. (justia.com)

These may include clear, safe and durable analysis of chemical reactions, natural phenomena like lightning strikes, falling objects, damage upon impact and other events the human eye can't precisely observe. (direporter.com)
For the same reason, eye tracking and attention analysis are valuable within the realm of commercial operations too. (eyeware.tech)
The eye-foot coordination analysis presented dyspraxia in both groups. (bvsalud.org)

With the ability to convert a single photon into multiple electrons, the sensor can realize greater sensitivity during photography as well as more accurate distance measurements. (direporter.com)

Anatomy4

Organisms1

Diseases3

Analytical, Diagnostic and Therapeutic Techniques and Equipment4

Psychiatry and Psychology12

Phenomena and Processes19

Information Science1

Strabismus7

Electroencephalography2

Innervation3

Cognitive4

Ocular3

Gaze6

Torsional3

Retinal4

EyeLink3

Recordings2

Simultaneously1

20201

Methods2

Examination4

Lateral1

Estimation1

Binocular5

Tracker8

Behavior2

Notably1

Data11

Exposure1

Clinical2

Objective2

Horizontal4

Brain5

Disorder1

Quantitative1

Suitable2

Performs3

Fixate1

Deficiency3

Electroencephalogram1

Underwent1

Severe1

Equipment1

Visual7

Alignment2

Enables3

Muscles2

Stability1

Diseases4

Cataracts1

Disorders2

Assessment3

Motor1

Facial1

System2

Patients5

Body2

Time2

Back3

Health1

ANALYSIS3

Accurate1