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 12 of 12 for “"Smooth pursuit"”.
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Exploration of smooth pursuit eye movements for gaze calibration in games
… offering a successful interaction experience. Smooth pursuit eye movements have been used to solve this new paradigm, but there is not enough information on the behavior of the eyes when performing such eye movement. In this work, we tried to understand the relationship between gaze and motion …
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Investigation into factors affecting perceptual stability of the world during smooth pursuit eye movements
During pursuit eye movement, a stationary background projected on the retina shifts in the direction opposite to that of the eye movement. This complicates the perception of objects because during an eye movement the retinal and head-centric motions differ. Nevertheless, our visual system is …
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A trajectory illusion and its relations to induced motion and smooth pursuit eye movements
… of induced motion, radial speed gradient, and smooth pursuit eye movements (SPEM). Results suggest that the strength of the illusion relies on induced motion and SPEMs, thereby implicating that the role of eye movements in the illusory FOE shift needs to be taken into consideration.
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The Effects of Target Velocity and Duration on Horizontal Smooth Pursuit Eye-Tracking in Normal Subjects, Rewarded and Non-Rewarded Schizophrenics.
In the human retina the rods and cones are unevenly distributed, with the greatest density of photoreceptors being located at the fovea. A perceptual correlate of this anatomical distribution is that visual acuity (a measure of spatial resolution) is greatest at the fovea. Accordingly, one function …
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Identification and Progression of Oculomotor Impairments in Acute Sport-Related Concussion
… Novel oculomotor assessments with saccade and smooth pursuit trials assessed National Collegiate Athletic Association (NCAA) student-athletes, once while in acute SRC and once when the student-athlete was symptom-free. Each experiment chapter represents the progression of the analysis and the …
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An investigation into the factors affecting the perception of a train's travelling speed
… showed that patterns of saccades, fixations and smooth pursuit behaviours differed in the case of the longer train, with initial saccades being made to a region further from the front of the train. Experiment 2 and 3 isolated the main types of eye movement patterns that our observers displayed …
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Mechanisms underlying chasing behaviour of male blowflies
… a black moving sphere instead of a real fly as pursuit target. By varying the size and speed of the target, this paradigm allowed a systematic analysis of the decisive visual determinants that guide chasing behaviour. Chasing male flies adjust their forward velocity depending on the retinal size …
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The Relationship Between Two Endophenotypes of Psychosis in Volunteers with Schizophrenia and Bipolar Disorder
Background: Deficits in smooth pursuit eye movements are an established endophenotype for schizophrenia (SZ) and are being investigated as a potential biomarker for psychotic bipolar disorder (BDP). While the molecular determinant of the physiological deficit is still unclear, considerable research …
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Influence of ADHD and Concussion History on Vestibular-Oculomotor Performance and Recovery Time in NCAA Division I Athletes with Sport-Related Concussion
… A significant difference was identified in smooth pursuit symptom provocation, with athletes without prior concussion history reporting greater symptoms than those with prior concussion history (p = 0.025, d = 0.59). No other VOMS subtests demonstrated significant differences. Conclusion: …
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Short term modification of vergence ramp eye movements in the convergent direction
… modification on vergence, saccadic and smooth pursuit eye movements. Previous vergence studies have concentrated on step modification stimuli. Few have investigated the effects of short-term modification on vergence ramp movements. Thus, this study explores the trends observed within a …
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Visual attention in naturalistic scenes across the lifespan.
… the first object. This result suggests during smooth pursuit a decrease in attentional resources allocated to the foveated object when there is a shift of covert attention towards a second object. In future studies, I aim to use this paradigm to explore more precisely the dynamic of overt and …