On the Nature of Visual-Oculomotor Connections
... open loop gain (G) of the system which should be large because the amount by which the eye drift is attenuated is 1/G. Collewijn-1 has shown that at low frequencies in the rabbit, G is 100 so that eye drift with vision is 100 times less than without. The directionally selective units sense the error ...
... open loop gain (G) of the system which should be large because the amount by which the eye drift is attenuated is 1/G. Collewijn-1 has shown that at low frequencies in the rabbit, G is 100 so that eye drift with vision is 100 times less than without. The directionally selective units sense the error ...
Almost Reason Enough for Having Eyes
... labeled line is responsible for the perception of white. Another line, the labeled line for “blackness,” carries output collected from the very same photoreceptors. However, this line derives from neural circuits with physiologically different components that invert the signal relative to the whiten ...
... labeled line is responsible for the perception of white. Another line, the labeled line for “blackness,” carries output collected from the very same photoreceptors. However, this line derives from neural circuits with physiologically different components that invert the signal relative to the whiten ...
Chapter 49
... Glaucoma: an eye disease caused by damage to the optic nerve that results in gradual loss of vision & possibly advancing to blindness; accompanied by increased intraocular pressure (IOP) Occurs when the IOP becomes so high that it causes damage to the optic nerve Median IOP is 15-16 mmHg, normal ...
... Glaucoma: an eye disease caused by damage to the optic nerve that results in gradual loss of vision & possibly advancing to blindness; accompanied by increased intraocular pressure (IOP) Occurs when the IOP becomes so high that it causes damage to the optic nerve Median IOP is 15-16 mmHg, normal ...
Functional Recovery of the Injured Optic Chiasma after Omental
... Evidence of this is the direct light response in the patient's right pupil, as well as the improvement in visual acuity and visual field in her left eye. These preliminary results demonstrate that there are axons in the injured optic pathway that can recover if circulation is regained. They also con ...
... Evidence of this is the direct light response in the patient's right pupil, as well as the improvement in visual acuity and visual field in her left eye. These preliminary results demonstrate that there are axons in the injured optic pathway that can recover if circulation is regained. They also con ...
Lateral Geniculate nucleus
... The pretectum bilateral projections to the Edinger-Westphal nuclei ensure that both eyes react to light: shining a light into each eye can elicit a direct and a consensual pupillary reflex. This light reflex tells us about one’s visual pathways status. ...
... The pretectum bilateral projections to the Edinger-Westphal nuclei ensure that both eyes react to light: shining a light into each eye can elicit a direct and a consensual pupillary reflex. This light reflex tells us about one’s visual pathways status. ...
Color Vision Theories
... • The Young-Helmholtz Trichromatic theory and the Hering Opponent-colors theory are one-stage models - all of color information processing is accomplished by the initial photopic sensory mechanisms. • The data from hue-cancellation experiments demonstrated that a two-stage model is necessary - a fir ...
... • The Young-Helmholtz Trichromatic theory and the Hering Opponent-colors theory are one-stage models - all of color information processing is accomplished by the initial photopic sensory mechanisms. • The data from hue-cancellation experiments demonstrated that a two-stage model is necessary - a fir ...
Sauve CVE 2015 - Calgary Vision Event
... automatically maintains eye fixation, even with eyes closed. Combines with optokinetic reflex (e.g. subject motionless, visual field moves.... nystagmus; e.g. watching scenery from car. Optokinetic reflex dominates eye stabilization in slow head movements (e.g. up to 1 Hz); VOR dominates as head acc ...
... automatically maintains eye fixation, even with eyes closed. Combines with optokinetic reflex (e.g. subject motionless, visual field moves.... nystagmus; e.g. watching scenery from car. Optokinetic reflex dominates eye stabilization in slow head movements (e.g. up to 1 Hz); VOR dominates as head acc ...
The Optokinetic Uncover TestA New Insight Into Infantile Esotropia
... JAMA Ophthalmol. 2013;131(6):759-765. doi:10.1001/jamaophthalmol.2013.2348 ...
... JAMA Ophthalmol. 2013;131(6):759-765. doi:10.1001/jamaophthalmol.2013.2348 ...
The Octopus as a Possible Model for Invertebrate Consciousness
... A [more or less] accepted assumption: The emergence of eyes was correlated with the appearance off mobile descended bil animals i l d d d ffrom sessile ancestors. Mobility meant exploitation of far-flung food sources and, eventually, predatory strategies. This led to an “arms race” between predator ...
... A [more or less] accepted assumption: The emergence of eyes was correlated with the appearance off mobile descended bil animals i l d d d ffrom sessile ancestors. Mobility meant exploitation of far-flung food sources and, eventually, predatory strategies. This led to an “arms race” between predator ...
The Limits of Human Vision - UK Swift Science Data Centre
... numbers are reversed to indicate that this display is taller than wide; in actuality the video projectors are turned sideways, and the computer generated video format is more traditionally wider than tall. The 4 wall case adds a ceiling display; the 5 wall case adds the floor; the 6 wall case is a c ...
... numbers are reversed to indicate that this display is taller than wide; in actuality the video projectors are turned sideways, and the computer generated video format is more traditionally wider than tall. The 4 wall case adds a ceiling display; the 5 wall case adds the floor; the 6 wall case is a c ...
Vision
... • Results from light focusing as lines, not points, on the retina due to unequal curvatures of the cornea or lens ...
... • Results from light focusing as lines, not points, on the retina due to unequal curvatures of the cornea or lens ...
refraction disorder
... because of unequal curvatures of the cornea Hyperopia: defect in which light rays focus beyond the retina (farsightedness) Myopia: defect in which light rays focus in front of the retina (nearsightedness) ...
... because of unequal curvatures of the cornea Hyperopia: defect in which light rays focus beyond the retina (farsightedness) Myopia: defect in which light rays focus in front of the retina (nearsightedness) ...
Surface visibility probabilities in 3D cluttered scenes
... creating occlusion relationships. Here one is typically concerned with the distribution of object boundaries and sizes [21, 20, 10, 17]. The key difference between the dead leaves model and the one we present is that the dead leaves model assumes 2D shapes that lie in the same plane i.e. dead leaves ...
... creating occlusion relationships. Here one is typically concerned with the distribution of object boundaries and sizes [21, 20, 10, 17]. The key difference between the dead leaves model and the one we present is that the dead leaves model assumes 2D shapes that lie in the same plane i.e. dead leaves ...
Παρουσίαση του PowerPoint - Intelligent Systems Laboratory
... – CG generates images from geometric primitives ...
... – CG generates images from geometric primitives ...
Machine Vision - Intelligent Systems Laboratory
... – CG generates images from geometric primitives ...
... – CG generates images from geometric primitives ...
Color Vision Theories
... • The Young-Helmholtz Trichromatic theory and the Hering Opponent-colors theory are one-stage models - all of color information processing is accomplished by the initial photopic sensory mechanisms. • The data from hue-cancellation experiments demonstrated that a two-stage model is necessary - a fir ...
... • The Young-Helmholtz Trichromatic theory and the Hering Opponent-colors theory are one-stage models - all of color information processing is accomplished by the initial photopic sensory mechanisms. • The data from hue-cancellation experiments demonstrated that a two-stage model is necessary - a fir ...
מצגת של PowerPoint
... - The proportion of monocular, deprived-eye neurons, in deprived animals was no different to the proportion of these neurons in controls (supporting prediction ‘a’). - The entire deprived-eye response range of neurons responding predominantly or exclusively to the deprived eye (OD score 0–0.25) was ...
... - The proportion of monocular, deprived-eye neurons, in deprived animals was no different to the proportion of these neurons in controls (supporting prediction ‘a’). - The entire deprived-eye response range of neurons responding predominantly or exclusively to the deprived eye (OD score 0–0.25) was ...
05-Intro-Vision-2
... = primary visual cortex = striate cortex (in contrast to higher, “extrastriate” areas). ...
... = primary visual cortex = striate cortex (in contrast to higher, “extrastriate” areas). ...
Evidence for implication of primate area V1 in neural 3
... glasses at 60 Hz per eye were projected in the visual field, centered on the receptive field. Static square wave gratings of the same size were also used to test orientation selectivity for evaluating whether the eventual gaze effects could be extended to other cortical properties in a coherent way or ...
... glasses at 60 Hz per eye were projected in the visual field, centered on the receptive field. Static square wave gratings of the same size were also used to test orientation selectivity for evaluating whether the eventual gaze effects could be extended to other cortical properties in a coherent way or ...
Klasyfikacja ICD-10 (International Classification of Diseases)
... in the form of asynchronous, concurrent saccades, particularly when looking upwardly are also observed. Vergentive movements are impaired, convergence or divergence paralyses, resulting in spastic, convergent setting of the eyeballs. Ophtalmoplegia disorders, including the failure of convergence are ...
... in the form of asynchronous, concurrent saccades, particularly when looking upwardly are also observed. Vergentive movements are impaired, convergence or divergence paralyses, resulting in spastic, convergent setting of the eyeballs. Ophtalmoplegia disorders, including the failure of convergence are ...
USC Brain Project Specific Aims
... = primary visual cortex = striate cortex (in contrast to higher, “extrastriate” areas). ...
... = primary visual cortex = striate cortex (in contrast to higher, “extrastriate” areas). ...
Second CMOC Minutes here
... organs and of the way these functions are integrated in the living body. Knowledge of normal physiology is the necessary pre-requisite to understand the abnormal state of functions of organs in diseases (i.e., Pathology). One of the most striking changes in medicine in recent years has been the incr ...
... organs and of the way these functions are integrated in the living body. Knowledge of normal physiology is the necessary pre-requisite to understand the abnormal state of functions of organs in diseases (i.e., Pathology). One of the most striking changes in medicine in recent years has been the incr ...
see clearly method
... lines. The criticism did not correspond to the experiences reported by the subjects, which led ophthalmologist Judd Beach to comment: “If we could devote a little time to some of these cases who do gain actual increase in acuity and try to find out what makes them tick, we might get some sort of ans ...
... lines. The criticism did not correspond to the experiences reported by the subjects, which led ophthalmologist Judd Beach to comment: “If we could devote a little time to some of these cases who do gain actual increase in acuity and try to find out what makes them tick, we might get some sort of ans ...
BT.1438 - Subjective assessment of stereoscopic television pictures
... Table 2 lists the test charts for the vision test. These 12 tests are selected according to the hierarchy of the human visual system from lower to higher levels. Eight main vision tests (VTs) are described below, and the other four are for the clinical test. Observers must have normal stereopsis, me ...
... Table 2 lists the test charts for the vision test. These 12 tests are selected according to the hierarchy of the human visual system from lower to higher levels. Eight main vision tests (VTs) are described below, and the other four are for the clinical test. Observers must have normal stereopsis, me ...
Stereopsis recovery
Stereopsis recovery, also recovery from stereoblindness, is the phenomenon of a stereoblind person gaining partial or full ability of stereo vision (stereopsis).It has long been established state of the art that the therapeutic treatment of stereoblind patients should aim at recovering stereo vision as far as possible in very young children, as well as in patients who had acquired but lost their ability for stereopsis due to a medical condition. In contrast, this aim has normally not been present in the treatment of those who missed out on learning stereopsis during their first few years of life. In fact, the acquisition of binocular and stereo vision was long thought to be impossible unless the person acquired this skill during a critical period in infancy and early childhood. This hypothesis normally went unquestioned and has formed the basis for the therapeutic approaches to binocular disorders for decades. It has been put in doubt in recent years. In particular since studies on stereopsis recovery began to appear in scientific journals and it became publicly known that neuroscientist Susan R. Barry achieved stereopsis well into adulthood, that assumption is in retrospect considered to have held the status of a scientific dogma.Very recently, there has been a rise in scientific investigations into stereopsis recovery in adults and youths who have had no stereo vision before. While it has now been shown that an adult may gain stereopsis, it is currently not yet possible to predict how likely a stereoblind person is to do so, nor is there general agreement on the best therapeutic procedure. Also the possible implications for the treatment of children with infantile esotropia are still under study.