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 11 of 11 for “"vection"”.
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Effects of Auditory Vection Speed and Directional Congruence on Perceptions of Visual Vection
… mishaps. One potential contributing factor is vection, an illusion of self-motion. Although vection is commonly thought of as a visual illusion, it can also be produced through audition. The purpose of the current experiment was to explore interactions between conflicting visual and auditory …
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The influence of second-order motion on the induction of vection
… first-order (FO) and SO motion stimuli to induce vection, the illusion of 3-D motion induced by image flow. Subjects reported the duration and latency to onset of the MAE and vection illusions in response to stimuli composed of multiplicative combinations of a basic vection signal (radially …
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Adaptation to a linear vection stimulus in a virtual reality environment
… study, examining human "looming linear vection" responses produced by a virtual checkerboard hallway scene moving towards the observer. In the Earth's gravity environment, the input of the vestibular system can be explored by setting the subject's body orientation (and axis of the …
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Pre-exposure Training as a Means to Reduce Vection Induced Symptoms of Motion Sickness
<p>The focus of this study was designed to empirically examine the effect of inducing mild motion sickness as an ameliorative to a more severe motion sickness exposure. Twenty-seven participants were selected for this study based upon their susceptibility to motion sickness, that is, only people …
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Software techniques for improving head mounted displays to create comfortable user experiences in virtual reality
… world. Users of VR systems often experience vection, the perception of self-motion in the absence of any physical movement. While vection helps to improve presence in VR, it often leads to a form of motion sickness called cybersickness. Prior work has discovered that changing vection …
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Numerical Analysis of the Melt Pool Kinetics in Selective Laser Melting Based Additive Manufacturing of M g2Si Thermoelectric Powders
… including the temperature evolution and the con- vection currents of the liquid melt within the molten pool. This approach was critical for optimizing processing parameters in our investigation, which were also used for printing the M g2Si powders using SLM. Additionally, a phase field-based model …
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The Effects of Different Optokinetic Drum Rotation Speeds on Motion Sickness Symptoms, Cognitive Performance and Sleep Amount
… can be disruptive to human performance. If vection-induced motion sickness symptoms, sleep amount disruptions, and worsening of cognitive performance can be measured and characterized, there are practical implications for equipment design, especially for virtual reality devices and …
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A Systematic Investigation into Induction and Mitigation Methods of Motion Sickness in Passengers of Automated Vehicles
… motion sickness due to the added sense of vection from the auditory stimuli. This was a unique observation that aligned with recent literature. Furthermore, the fourth study also found evidence in support of the Cognitive Distraction Effect. In summary, this dissertation provides a …
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Right Hemisphere Activation to Rotary Stress in High and Low Hostile Men
Several lines of research on converge for the conclusion that high and low hostile men differ with respect to autonomic regulation of stress. The functional cerebral systems approach has provided a theoretical framework to account for this finding across the individual sensory, motor, and premotor …
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Peripheral Dynamic Visual Acuity Under Randomized Tracking Task Difficulty, Target Velocities, and Direction of Target Presentation
… used to create a sense of ego motion (termed "vection"), and for alerting the visual system to targets entering or leaving the field of view. Past findings involving visual acuity in the peripheral retina have demonstrated that peripheral acuity performance has components related to the notion …
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Sex and Virtual Reality: Posture and Motion Sickness
It is well established that exposure to virtual motion environments (VME) can elicit postural instability (PI) in addition to motion sickness (MS). While research has found sex differences in motion sickness, the results of experimental studies are equivocal regarding these differences, and …