Principles and Clinical Applications of Ray-Tracing
... Figure 6. Overview screen of the WF Verification Display. The RSD is on the bottom left corner and the two point profiles (horizontal and vertical) that express the quality of the measurement are in the centre. ...
... Figure 6. Overview screen of the WF Verification Display. The RSD is on the bottom left corner and the two point profiles (horizontal and vertical) that express the quality of the measurement are in the centre. ...
Supranuclear control of ocular motility
... locomotion, generating compensatory eye movements to counteract high-frequency head perturbations that occur with each step. One remarkable property of vestibulo-ocular reflexes is their short latency (less than 15 ms). The loss of these reflexes (e.g., caused by gentamycin toxicity) invariably resu ...
... locomotion, generating compensatory eye movements to counteract high-frequency head perturbations that occur with each step. One remarkable property of vestibulo-ocular reflexes is their short latency (less than 15 ms). The loss of these reflexes (e.g., caused by gentamycin toxicity) invariably resu ...
Spatiotemporal Properties of Eye Position Signals
... For each neuron, data were aligned on either the initiation of saccades or the onset and offset of visual stimuli. Saccades were detected using automated algorithms. After applying a 29-point finite impulse response filter to eye position data, horizontal and vertical eye velocities were obtained by d ...
... For each neuron, data were aligned on either the initiation of saccades or the onset and offset of visual stimuli. Saccades were detected using automated algorithms. After applying a 29-point finite impulse response filter to eye position data, horizontal and vertical eye velocities were obtained by d ...
The Control of Voluntary Eye Movements: New Perspectives
... these movements as visuomotor reflexes that act to minimize visual “error” signals. Indeed, many species can generate smooth optokinetic eye movements, which help stabilize the eyes during head and body movements by minimizing the motion of the entire visual surround. However, when we move about in ...
... these movements as visuomotor reflexes that act to minimize visual “error” signals. Indeed, many species can generate smooth optokinetic eye movements, which help stabilize the eyes during head and body movements by minimizing the motion of the entire visual surround. However, when we move about in ...
The transference of benefits between the eyes Does
... In order to explain eye movements one needs to know how to measure them. The adult eyeball is a sphere and measures about 2.5 cm with only the anterior one-sixth of the eyeball exposed (Tortora & Nielsen, 2012). Because the eye is a sphere we measure it in degrees, much like the longitudes and latit ...
... In order to explain eye movements one needs to know how to measure them. The adult eyeball is a sphere and measures about 2.5 cm with only the anterior one-sixth of the eyeball exposed (Tortora & Nielsen, 2012). Because the eye is a sphere we measure it in degrees, much like the longitudes and latit ...
A Flow Chart For Classification Of Nystagmus
... velocity is higher when gaze is in the direction of the quick phase. With central lesions the opposite sometimes occurs. Nystagmus of peripheral origin is suppressed by visual fixation; nystagmus of a central origin is usually not. A dynamic imbalance between the response from the two labyrinths dur ...
... velocity is higher when gaze is in the direction of the quick phase. With central lesions the opposite sometimes occurs. Nystagmus of peripheral origin is suppressed by visual fixation; nystagmus of a central origin is usually not. A dynamic imbalance between the response from the two labyrinths dur ...
Mechanisms for generating and compensating for the
... how these movements may influence behavior. The opportunity lies in the fact that we still know relatively little about the neural mechanisms for generating microsaccades. Recent results have brought to light the importance of going after these mechanisms, and it stands to reason that understanding h ...
... how these movements may influence behavior. The opportunity lies in the fact that we still know relatively little about the neural mechanisms for generating microsaccades. Recent results have brought to light the importance of going after these mechanisms, and it stands to reason that understanding h ...
Bug Tracking System vs SVN/CVS
... where CVs stores the revision History. Working Copy:The copy in which actual changes are made. Typical CVS system supports several programmers to work concurrently.The server will accept the changes made to the most recent version of file.Developers are therefore expected to keep their working copy ...
... where CVs stores the revision History. Working Copy:The copy in which actual changes are made. Typical CVS system supports several programmers to work concurrently.The server will accept the changes made to the most recent version of file.Developers are therefore expected to keep their working copy ...
Unique structure and optics of the lesser eyes of
... stage of the cubozoans, box jellyfish, all possess four sensory structures, the rhopalia, each carrying a similar set of six eyes (Berger, 1898, 1900; Claus, 1878; Hertwig & Hertwig, 1878; Schewiakoff, 1889). These six eyes are of four types: two relatively large medial eyes with spherical lenses, a l ...
... stage of the cubozoans, box jellyfish, all possess four sensory structures, the rhopalia, each carrying a similar set of six eyes (Berger, 1898, 1900; Claus, 1878; Hertwig & Hertwig, 1878; Schewiakoff, 1889). These six eyes are of four types: two relatively large medial eyes with spherical lenses, a l ...
Corneal Asphericity and Retinal Image Quality
... there is no single or narrow range of preferred conic shapes that would provide good images for all eyes. An additional check was made by introducing asymmetric aberrations into the internal optics of the model eye. When coma was introduced to the model eye by tipping the crystalline lens, the resul ...
... there is no single or narrow range of preferred conic shapes that would provide good images for all eyes. An additional check was made by introducing asymmetric aberrations into the internal optics of the model eye. When coma was introduced to the model eye by tipping the crystalline lens, the resul ...
THE POSTNATAL DEVELOPMENT OF THE VISUAL CORTEX AND THE INFLUENCE OF ENVIRONMENT
... specific response properties of cortical cells emerged during postnatal development. We were also interested in examining the role of visual experience in normal development, a question raised and discussed by philosophers since the time of Descartes. The design of these experiments was undoubtedly ...
... specific response properties of cortical cells emerged during postnatal development. We were also interested in examining the role of visual experience in normal development, a question raised and discussed by philosophers since the time of Descartes. The design of these experiments was undoubtedly ...
Torsten Wiesel - Biology Courses Server
... in life, during which the visual system shows this lability. We termed this the “critical period.” The permanent visual deficits observed in children with congenital cataracts are therefore most likely a result of changes in the visual cortex that occurred during the critical period. Adult humans su ...
... in life, during which the visual system shows this lability. We termed this the “critical period.” The permanent visual deficits observed in children with congenital cataracts are therefore most likely a result of changes in the visual cortex that occurred during the critical period. Adult humans su ...
The Influence of Target Properties and the Possible
... Saccadic eye movements, which rapidly and accurately guide our gaze from one point of interest to another, allow us to interact with our visual environment. Latency and peak velocity are among the most studied parameters of saccades with their characteristics pretty well known. However, much less i ...
... Saccadic eye movements, which rapidly and accurately guide our gaze from one point of interest to another, allow us to interact with our visual environment. Latency and peak velocity are among the most studied parameters of saccades with their characteristics pretty well known. However, much less i ...
Effects of Early Monocular Deprivation on Visual
... normal, monocularly deprived (MD), and binocularly deprived (BD) cats have demonstrated that cells of the striate cortex developed permanently abnormal receptivefield properties in the deprived cats. For instance, they reported that most cells in the normal cat’s striate cortex had receptive fields ...
... normal, monocularly deprived (MD), and binocularly deprived (BD) cats have demonstrated that cells of the striate cortex developed permanently abnormal receptivefield properties in the deprived cats. For instance, they reported that most cells in the normal cat’s striate cortex had receptive fields ...
Accommodation demand and deprivation in kitten ocular
... investigated in four groups of kittens (total n = 29). Group 1 consisted of five normal kittens; group 2 (nine kittens) had monocular radial keratotomy to induce relative hypermetropia and more accommodation demand as well as to impart interocular refractive differences (anisometropia); group 3 (eig ...
... investigated in four groups of kittens (total n = 29). Group 1 consisted of five normal kittens; group 2 (nine kittens) had monocular radial keratotomy to induce relative hypermetropia and more accommodation demand as well as to impart interocular refractive differences (anisometropia); group 3 (eig ...
Accommodation demand and deprivation in kitten ocular
... lens focal length differences in these eyes were approximately the same as those of the radial keratotomy group. In all three treated groups, the interocular differences were greater for the anterior focal length, especially in the fourth group in which the ratio of differences anterior to posterior ...
... lens focal length differences in these eyes were approximately the same as those of the radial keratotomy group. In all three treated groups, the interocular differences were greater for the anterior focal length, especially in the fourth group in which the ratio of differences anterior to posterior ...
ERRORS OF REFRACTION
... It is a condition in which a point of light cannot be made to produce a punctate image upon the retina by any spherical correcting lens ...
... It is a condition in which a point of light cannot be made to produce a punctate image upon the retina by any spherical correcting lens ...
computer assisted diagnoses for red eye (cadre)
... are deprived of the facilities of having experts in eye disease. So it is the need of the day to store the expertise of Eye specialists in computers through using ES technology. This ES is a rule-based Expert System that assists in red-eye diagnosis and treatment. The knowledge acquired from literat ...
... are deprived of the facilities of having experts in eye disease. So it is the need of the day to store the expertise of Eye specialists in computers through using ES technology. This ES is a rule-based Expert System that assists in red-eye diagnosis and treatment. The knowledge acquired from literat ...
Evolving a Roving Eye for Go - Neural Network Research Group
... performance in Go. Not only are there generally more moves possible in Go than other two-player, complete information, zero-sum, games, but it is also difficult to formulate an accurate evaluation function for board positions [1]. However, the game can be simplified by playing on a smaller board [4] ...
... performance in Go. Not only are there generally more moves possible in Go than other two-player, complete information, zero-sum, games, but it is also difficult to formulate an accurate evaluation function for board positions [1]. However, the game can be simplified by playing on a smaller board [4] ...
the properties and neural substrate of eye movements
... this threshold, visual acuity declines in a logarithmic fashion.7,15 An exception to these general rules concerns eye rotations about the line of sight—torsional movements when the subject views a small object with the fovea; in this case, geometry dictates that horizontal and vertical components of ...
... this threshold, visual acuity declines in a logarithmic fashion.7,15 An exception to these general rules concerns eye rotations about the line of sight—torsional movements when the subject views a small object with the fovea; in this case, geometry dictates that horizontal and vertical components of ...
Aerie Pharmaceuticals Announces Pricing of Initial Public Offering
... any sale of these securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. About Aerie Pharmaceuticals Aerie Pharmaceuticals is a clinical-stage pharmaceuti ...
... any sale of these securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction. About Aerie Pharmaceuticals Aerie Pharmaceuticals is a clinical-stage pharmaceuti ...
The Dorsal Visual System Predicts Future and Remembers Past Eye
... doi: 10.3389/fnsys.2016.00009 ...
... doi: 10.3389/fnsys.2016.00009 ...
marketing_presentation_nojack
... Objectives of the NOJACK Company introducing a car tracking device 3. Offer an effective tracking and anti-theft system that will prevent the current cases of car loss 4. Prevent unnecessary delays in fleet sales through track monitoring. 5. Produce product at the lowest cost possible to avoid over ...
... Objectives of the NOJACK Company introducing a car tracking device 3. Offer an effective tracking and anti-theft system that will prevent the current cases of car loss 4. Prevent unnecessary delays in fleet sales through track monitoring. 5. Produce product at the lowest cost possible to avoid over ...
- Wiley Online Library
... keep their vision focused on a black cross-hair positioned centrally on a gray background. For the externally guided changes in eye position sessions, the fMRI paradigm followed a standardized blockrelated paradigm in which blocks of fixation (centrally positioned cross-hair, 24 s) were interleaved w ...
... keep their vision focused on a black cross-hair positioned centrally on a gray background. For the externally guided changes in eye position sessions, the fMRI paradigm followed a standardized blockrelated paradigm in which blocks of fixation (centrally positioned cross-hair, 24 s) were interleaved w ...
Smooth Pursuit Impairment in Schizophrenia— What Does It Mean?
... with respect to the finding of Brezinova and Kendell (1977), it is of interest that stress, fatigue, or moderate distraction did not impair tracking. Smooth pursuit in this study was only impaired when subjects had to do a difficult mental calculation (serially subtracting 13 from 200) and write dow ...
... with respect to the finding of Brezinova and Kendell (1977), it is of interest that stress, fatigue, or moderate distraction did not impair tracking. Smooth pursuit in this study was only impaired when subjects had to do a difficult mental calculation (serially subtracting 13 from 200) and write dow ...
Eye tracking
This is the article for the study of eye movement. For the tendency to visually track potential prey, see eye-stalkingEye tracking is the process of measuring either the point of gaze (where one is looking) or the motion of an eye relative to the head. An eye tracker is a device for measuring eye positions and eye movement. Eye trackers are used in research on the visual system, in psychology, in psycholinguistics, marketing, as an input device for human computer interaction, and in product design. There are a number of methods for measuring eye movement. The most popular variant uses video images from which the eye position is extracted. Other methods use search coils or are based on the electrooculogram.