Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 26 for “"Nystagmus"”.
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A molecular-genetic study of Congenital Nystagmus
Nystagmus is a disorder of eye movement characterised by irregular, uncontrolled and repetitive eye movements. It can occur in a broad spectrum of clinical situations and diseases or it may occur in isolation and an inherited disorder. Surprisingly little is known about the underlying mechanisms of …
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Nystagmus generation, oculomotor tracking and visual motion perception.
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1974.
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Detection of fast phase of nystagmus using digital filtering
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1983.
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Investigation of optokinetic nystagmus and the linear vestibular-ocular reflex
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1993.
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Modulation of optokinetic nystagmus in humans by linear acceleration, and the effects of spaceflight
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1992.
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Oculomotor Control in Patients with Parkinson's Disease
… displaced step jump target motion. Pendular nystagmus was found in all Parkinson’s subjects, with an average frequency of 7.44 Hz. Saccadic peak velocity and duration along the main sequence were not statistically different from controls. A slower rate of reading was also noted in the …
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Sensory and Cognitive Influences on Oculomotor and Whole-body Coordination during Standing Turns
… gaze strategy driven primarily by eye movements (nystagmus). However, the relationship between eye movements and whole-body coordination during turning has not been fully explored under different environmental and sensory contexts and as a result, the neural mechanisms responsible for this …
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Analysis of the Physical and Physiological Events Resulting from Caloric Irrigation of the Human Temporal Bone
… caloric responses. Although the difference of nystagmus intensities may be explained by the difference in the magnitude of the respective water temperatures, there remained a possible influence of a stimulus-related adaptation effect upon the response latencies.<br/><br/>Regarding pathways and …
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The relationship between motor proficiency, bilateral vestibular hypofunction and dynamic visual acuity in children with congenital or early acquired sensorineural hearing loss
… function with the Southern California Postrotary Nystagmus Test.
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Incremental adaptation to yaw head movements during 30 RPM centrifugation
… perceived body tilt, non-compensatory vertical nystagmus, and motion sickness. Past experiments in the Man Vehicle Lab have studied adaptation to yaw head movements while rotating at 23 RPM. To investigate adaptation to head movements at a higher rotation rate, 28 subjects participated in a …
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Torsionelle Augenbewegungen bei galvanischen, natürlichen und pathologischen Reizzuständen des menschlichen Gleichgewichtssystems
… (VOR) -- Augenbewegungen, die neben horizontalem Nystagmus auch aus phasischen und tonischen Torsionskomponenten bestehen. Letztere haben in der Literatur zu der Vermutung eines starken Otolithenbeitrags geführt. Bei näherer Betrachtung der bekannten VOR-Verstärkungen fiel jedoch auf, dass die …
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Ocular motion classification for mobile device presentation attack detection
… methods and evaluation of a novel optokinetic nystagmus (OKN) based PAD system for mobile device applications which leverages phase-locked temporal features of a unique reflexive behavioral response. Background is provided for historical and literary context of eye motion and ocular tracking to …
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Die Bedeutung des Spontannystagmus in der neurootologischen Netzwerkdiagnostik
… Arbeit wurde die Wertigkeit des Spontannystagmus in der neurootologischen Netzwerkdiagnostik analysiert und mit anderen Studien verglichen. Weiterhin sollte geklärt werden, ob sich durch die Anwesenheit von Spontannystagmus möglicherweise weitere Folgediagnosen stellen lassen. …
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Effects of Auditory Vection Speed and Directional Congruence on Perceptions of Visual Vection
… ratings, vection speed ratings, and horizontal nystagmus frequency. Subjective responses to motion were assessed pre and post treatment, and oculomotor responses were assessed before, during, and following exposure to circular vection. The results revealed a significant effect of stimulus …
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Cross plane transfer of vestibular adaptation to human centrifugation
… Since these movements can elicit inappropriate nystagmus, illusions of tumbling, and motion sickness, efforts have been made to adapt people to the stimuli. So far these efforts have been successful in showing that people will adapt to at least one plane of head motion, the yaw (transverse) …
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Molekulargenetische Untersuchung bei inkompletter kongenitaler stationärer Nachtblindheit (CSNB2)
… der x–gekoppelten Form (xlCSNB) sind zudem ein Nystagmus sowie Strabismus bei normalem Augenhinter-grund beschrieben. Aus elektrophysiologischer und psychophysischer Sicht lassen sich da-bei zwei Varianten unterscheiden. Eine Form, bei der keine Stäbchenfunktion mehr nachweisbar ist (CSNB1, …
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Structural retinal and visual cortex phenotyping and gene therapy in achromatopsia
… colour vision deficiency, photoaversion and nystagmus as core features of this disease. Variants in two genes, CNGA3 and CNGB3 are responsible for 70% of reported cases. Patient management currently centres on visual impairment certification, symptom alleviation and adaptation, with no …
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Modeling and Monitoring of Otolith Organ Performance in US Navy Operating Environments
… mPa for 10 days. No spontaneous primary position nystagmus, horizontal, vertical or torsional, was detected in any diver. This experiment was the first successful attempt to record and analyze eye movements underwater.
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A somatosensory test : a pilot study
… (Ayres, 1972) and Southern California Postrotary Nystagmus Test (Ayres, 1975). These particular tests were revised, changed and restandardized in 1989. For various reasons the new form, Sensory Integration and Praxis Tests (Ayres, 1989), is not feasible for use in South Africa. It has thus become …
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The cellular basis of the Southern African forms of rufous & tyrosinase-positive oculocutaneous albinism
… acuity. Ten albinism have been photophobia, nystagmus and decreased different forms of oculocutaneous described. Of these, the tyrosinasepositive and rufous forms are particularly prevalent in Southern Africa. The tyrosinase-positive form manifests as two distinctly different phenotypes with …
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