The Effects Of Specific Force On Self Motion Perception In A Simulation Environment
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The Effects Of Specific Force On Self Motion Perception In A Simulation Environment
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Author : Bruno Jorge Correia Grácio
language : en
Publisher:
Release Date : 2013
The Effects Of Specific Force On Self Motion Perception In A Simulation Environment written by Bruno Jorge Correia Grácio and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Measuring Modelling And Minimizing Perceived Motion Incongruence For Vehicle Motion Simulation
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Author : Diane Cleij
language : en
Publisher: Logos Verlag Berlin GmbH
Release Date : 2020-01-28
Measuring Modelling And Minimizing Perceived Motion Incongruence For Vehicle Motion Simulation written by Diane Cleij and has been published by Logos Verlag Berlin GmbH this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-01-28 with Computers categories.
Humans always wanted to go faster and higher than their own legs could carry them. This led them to invent numerous types of vehicles to move fast over land, water and air. As training how to handle such vehicles and testing new developments can be dangerous and costly, vehicle motion simulators were invented. Motion-based simulators in particular, combine visual and physical motion cues to provide occupants with a feeling of being in the real vehicle. While visual cues are generally not limited in amplitude, physical cues certainly are, due to the limited simulator motion space. A motion cueing algorithm (MCA) is used to map the vehicle motions onto the simulator motion space. This mapping inherently creates mismatches between the visual and physical motion cues. Due to imperfections in the human perceptual system, not all visual/physical cueing mismatches are perceived. However, if a mismatch is perceived, it can impair the simulation realism and even cause simulator sickness. For MCA design, a good understanding of when mismatches are perceived, and ways to prevent these from occurring, are therefore essential. In this thesis a data-driven approach, using continuous subjective measures of the time-varying Perceived Motion Incongruence (PMI), is adopted. PMI in this case refers to the effect that perceived mismatches between visual and physical motion cues have on the resulting simulator realism. The main goal of this thesis was to develop an MCA-independent off-line prediction method for time-varying PMI during vehicle motion simulation, with the aim of improving motion cueing quality. To this end, a complete roadmap, describing how to measure and model PMI and how to apply such models to predict and minimize PMI in motion simulations is presented. Results from several human-in-the-loop experiments are used to demonstrate the potential of this novel approach.
The Effects Of Gravity On Self Motion Perception
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Author : Pearl Shaina Guterman
language : en
Publisher:
Release Date : 2016
The Effects Of Gravity On Self Motion Perception written by Pearl Shaina Guterman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Gravity is the most pervasive force that we encounter. For instance, we observe a variety of objects being accelerated toward the Earth by gravity, but we also experience these forces when we are simply stationaryas gravity is a constant accelerationor when we are ourselves in motion, such as when we are locomoting on foot, driving a vehicle, jumping or skiing. It follows that our ability to successfully navigate our environment must somehow take into account the effects of gravity on our body's motion-detecting sensesa dynamic relationship which changes with self-motion and self-orientation. The goal of this dissertation was to investigate how body orientation relative to gravity influences visual-vestibular interactions in visually-induced perception of self-motion (i.e., vection). Specifically, I examined this relationship by placing observers in varied postures and presenting visual displays simulating forward/backward self-motion with vertical/horizontal viewpoint oscillation, that mimics components produced by head-movements in real self-motion. I found that tilting observers reduced vection and the two viewpoint oscillations similarly enhanced vection, suggesting that current postural and oscillation-based vection findings are best explained by ecology. I also examined the influence of scene structure and alignment of the body and visual motion relative to gravity on vection. Observers in different postures viewed simulated translational self-motion displays consisting of either a single rigid structure or dots. The experimental data showed that vection depended on both posture and the perceived interpretation of the visual scene, indicating that self-motion perception is modulated by high-order cognitive processes. I also found that observers reported illusory tilt of the stimulus when they were not upright. I investigated these observer reports of a posture-dependent perceived stimulus tilt by presenting upright and tilted observers with static and motion stimuli that were tilted from the graviational vertical. Postural-dependent tilt effects were found for both these stimuli and were greater for motion experienced as self-motion than external motion. Taken together, the results of this dissertation demonstrate that our perception of self-motion is influenced by gravity, and by prior experiences and internal mental representations of our visual world.
Perception And Control Of Simulated Self Motion
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Author :
language : en
Publisher:
Release Date : 1987
Perception And Control Of Simulated Self Motion written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Motion study categories.
The Effect Of Perceived Self Orientation On The Perception Of Visually Induced Self Motion
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Author : Meaghan Elizabeth McManus
language : en
Publisher:
Release Date : 2020
The Effect Of Perceived Self Orientation On The Perception Of Visually Induced Self Motion written by Meaghan Elizabeth McManus and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020 with categories.
In certain environments the direction of up indicated by vision and gravity can be in conflict where these directions do not agree. Some people resolve this conflict by relying on their visual cues. In this case, when a participant and the room in which they are sitting are both tilted together, they would feel as if they were standing upright and would experience what is called a Visual Reorientation Illusion (VRI). A VRI on Earth might result from either (1) ignoring the gravity up in favour of the visual up, resulting in a higher visual weighting, or (2) misinterpreting the ambiguous vestibular acceleration cue not as a tilt but as a translation. In Chapter 2, I present evidence that during a VRI individuals require less visual motion to perceive that they have traveled through a specified distance: the move-to-target task. This might result from an enhancement of the visual cue due to a higher visual weighting while down-weighting the conflicting gravity cue, here referred to as my reweighting hypothesis. In Chapter 3, I find that people with VRIs actually have a lower visual weight and higher gravity weight when determining their perceived upright. This suggests that either the reweighting theory is incorrect or that the participants with a higher gravity weight might be more likely to detect, and then reweight, the conflicting visual and vestibular cues. In Chapter 4, I find that when the gravity cue is removed by moving into a 0g environment, initially there is no difference in performance on the move-to-target task compared to on Earth, but after adapting to microgravity and also upon return to 1g, participants need more visual motion to feel they have passed through a specified distance. Chapter 4 provides further evidence that my reweighting theory is incorrect. My research demonstrates that even within the same environment and while viewing the same stimuli, different people can have different interpretations of the environment which are related to changes in behaviour. Specifically, a persons perceived orientation can affect their self-motion perception. The findings are discussed in terms of sensory cue conflict and reweighting, as well as differences between how we perceive visual motion versus how we use it.
Vehicle Simulation
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Author : Alfred T. Lee
language : en
Publisher: CRC Press
Release Date : 2017-11-13
Vehicle Simulation written by Alfred T. Lee and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-13 with Computers categories.
This book covers the problem of fidelity in the design of virtual environments with specific reference to the design of vehicle simulators. The default design goal has been on the physical replication of a given real-world environment and, in the case of vehicles, the specific appearance and function of vehicle components. This book discusses that perceptual, rather than physical, fidelity of a virtual environment, should be the design goal and the principal purpose is to produce human behavior. This book provides the rationale and design guidance to maximize perceptual fidelity in the development of virtual environments, and therefore maximize the costeffectiveness as well.
Simulation In Aviation Training
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Author : Florian Jentsch
language : en
Publisher: Routledge
Release Date : 2017-05-15
Simulation In Aviation Training written by Florian Jentsch and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-05-15 with Transportation categories.
Simulations have been a fixture of aviation training for many years. Advances in simulator technology now enable modern flight simulation to mimic very closely the look and feel of real world flight operations. In spite of this, responsible researchers, trainers, and simulation developers should look beyond mere simulator fidelity to produce meaningful training outcomes. Optimal simulation training development can unquestionably benefit from knowledge and understanding of past, present, and future research in this topic area. As a result, this volume of key writings is invaluable as a reference, to help guide exploration of critical research in the field. By providing a mix of classic articles that stand the test of time, and recent writings that illuminate current issues, this volume informs a broad range of topics relevant to simulation training in aviation.
Human Walking In Virtual Environments
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Author : Frank Steinicke
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-05-15
Human Walking In Virtual Environments written by Frank Steinicke and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-05-15 with Technology & Engineering categories.
This book presents a survey of past and recent developments on human walking in virtual environments with an emphasis on human self-motion perception, the multisensory nature of experiences of walking, conceptual design approaches, current technologies, and applications. The use of Virtual Reality and movement simulation systems is becoming increasingly popular and more accessible to a wide variety of research fields and applications. While, in the past, simulation technologies have focused on developing realistic, interactive visual environments, it is becoming increasingly obvious that our everyday interactions are highly multisensory. Therefore, investigators are beginning to understand the critical importance of developing and validating locomotor interfaces that can allow for realistic, natural behaviours. The book aims to present an overview of what is currently understood about human perception and performance when moving in virtual environments and to situate it relative to the broader scientific and engineering literature on human locomotion and locomotion interfaces. The contents include scientific background and recent empirical findings related to biomechanics, self-motion perception, and physical interactions. The book also discusses conceptual approaches to multimodal sensing, display systems, and interaction for walking in real and virtual environments. Finally, it will present current and emerging applications in areas such as gait and posture rehabilitation, gaming, sports, and architectural design.
Perception And Control Of Self Motion
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Author : Rik Warren
language : en
Publisher: Psychology Press
Release Date : 2014-01-14
Perception And Control Of Self Motion written by Rik Warren and has been published by Psychology Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-01-14 with Psychology categories.
This book presents studies of self-motion by an international group of basic and applied researchers including biologists, psychologists, comparative physiologists, kinesiologists, aerospace and control engineers, physicians, and physicists. Academia is well represented and accounts for most of the applied research offered. Basic theoretical research is further represented by private research companies and also by government laboratories on both sides of the Atlantic. Researchers and students of biology, psychology, physiology, kinesiology, engineering, and physics who have an interest in self-motion -- whether it be underwater, in space, or on solid ground -- will find this volume of interest. This book presents studies of self-motion by an international group of basic and applied researchers including biologists, psychologists, comparative physiologists, kinesiologists, aerospace and control engineers, physicians, and physicists. Academia is well represented and accounts for most of the applied research offered. Basic theoretical research is further represented by private research companies and also by government laboratories on both sides of the Atlantic. Researchers and students of biology, psychology, physiology, kinesiology, engineering, and physics who have an interest in self-motion -- whether it be underwater, in space, or on solid ground -- will find this volume of interest.
Journal Of Aircraft
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Author :
language : en
Publisher:
Release Date : 1997
Journal Of Aircraft written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Aeronautics categories.