Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 49
Book Description
Measuring Sense of Presence and Motion's Effect on Simulator Sickness in Virtual Environments
Simulator Sickness in Virtual Environments
Author: Eugenia M. Kolasinski
Publisher:
ISBN:
Category : Motion sickness
Languages : en
Pages : 74
Book Description
Publisher:
ISBN:
Category : Motion sickness
Languages : en
Pages : 74
Book Description
Learning in a Synthetic Environment
Author: David M. Johnson
Publisher:
ISBN:
Category : Synthetic training devices
Languages : en
Pages : 86
Book Description
"Soldiers explored a synthetic representation of an Army heliport under three visual display conditions: (1) wide field of view (FOV) helmet mounted display, (2) narrow FOV helmet mounted display, and (3) stationary, wide screen display. Pretest and posttest measures of spatial knowledge were recorded. Measures of presence in the virtual environment were recorded. Measures of simulator sickness were administered upon exit from the virtual environment and 24 hours later. Overall, soldiers acquired a significant amount of spatial knowledge from the synthetic representation. When transferred to the actual Army heliport, soldiers were able to navigate around the location with near zero errors. There was no effect of visual display on any measures of spatial knowledge. Also, there was no effect of visual display on reported presence or simulator sickness. Simulator sickness was significantly reduced after 24 hours away from the virtual environment. Presence did not correlate with spatial knowledge. Simulator sickness correlated negatively with spatial knowledge. Presence and simulator sickness were negatively correlated."--DTIC.
Publisher:
ISBN:
Category : Synthetic training devices
Languages : en
Pages : 86
Book Description
"Soldiers explored a synthetic representation of an Army heliport under three visual display conditions: (1) wide field of view (FOV) helmet mounted display, (2) narrow FOV helmet mounted display, and (3) stationary, wide screen display. Pretest and posttest measures of spatial knowledge were recorded. Measures of presence in the virtual environment were recorded. Measures of simulator sickness were administered upon exit from the virtual environment and 24 hours later. Overall, soldiers acquired a significant amount of spatial knowledge from the synthetic representation. When transferred to the actual Army heliport, soldiers were able to navigate around the location with near zero errors. There was no effect of visual display on any measures of spatial knowledge. Also, there was no effect of visual display on reported presence or simulator sickness. Simulator sickness was significantly reduced after 24 hours away from the virtual environment. Presence did not correlate with spatial knowledge. Simulator sickness correlated negatively with spatial knowledge. Presence and simulator sickness were negatively correlated."--DTIC.
Virtual Environments and Advanced Interface Design
Author: Woodrow Barfield
Publisher: Oxford University Press
ISBN: 0195360532
Category : Computers
Languages : en
Pages : 595
Book Description
This sweeping introduction to the science of virtual environment technology masterfully integrates research and practical applications culled from a range of disciplines, including psychology, engineering, and computer science. With contributions from the field's foremost researchers and theorists, the book focuses in particular on how virtual technology and interface design can better accommodate human cognitive, motor, and perceptual capabilities. Throughout, it brings the reader up-to-date with the latest design strategies and cutting-edge virtual environments, and points to promising avenues for future development. The book is divided into three parts. The first part introduces the reader to the subject by defining basic terms, identifying key components of the virtual environment, and reviewing the origins and elements of virtual environments. The second part focuses of current technologies used to present visual, auditory, tactile, and kinesthetic information. The book concludes with an in-depth analysis of how environments and human perception are integrated to create effective virtual systems. Comprehensive and splendidly written, Virtual Environments and Advanced Interface Design will be the "bible" on the subject for years to come. Students and researchers in computer science, psychology, and cognitive science will all want to have a copy on their shelves.
Publisher: Oxford University Press
ISBN: 0195360532
Category : Computers
Languages : en
Pages : 595
Book Description
This sweeping introduction to the science of virtual environment technology masterfully integrates research and practical applications culled from a range of disciplines, including psychology, engineering, and computer science. With contributions from the field's foremost researchers and theorists, the book focuses in particular on how virtual technology and interface design can better accommodate human cognitive, motor, and perceptual capabilities. Throughout, it brings the reader up-to-date with the latest design strategies and cutting-edge virtual environments, and points to promising avenues for future development. The book is divided into three parts. The first part introduces the reader to the subject by defining basic terms, identifying key components of the virtual environment, and reviewing the origins and elements of virtual environments. The second part focuses of current technologies used to present visual, auditory, tactile, and kinesthetic information. The book concludes with an in-depth analysis of how environments and human perception are integrated to create effective virtual systems. Comprehensive and splendidly written, Virtual Environments and Advanced Interface Design will be the "bible" on the subject for years to come. Students and researchers in computer science, psychology, and cognitive science will all want to have a copy on their shelves.
Simulator Sickness in Virtual Environments
Author: Eugenia M. Kolasinski
Publisher:
ISBN:
Category : Motion sickness
Languages : en
Pages : 74
Book Description
Publisher:
ISBN:
Category : Motion sickness
Languages : en
Pages : 74
Book Description
The Impact of Virtual and Augmented Reality on Individuals and Society
Author: Mel Slater
Publisher: Frontiers Media SA
ISBN: 2889630641
Category :
Languages : en
Pages : 335
Book Description
Publisher: Frontiers Media SA
ISBN: 2889630641
Category :
Languages : en
Pages : 335
Book Description
Effect of a Body Model on Performance in a Virtual Environment Search Task
Author: Michael J. Singer
Publisher:
ISBN:
Category : Soldiers
Languages : en
Pages : 46
Book Description
The U.S. Army Research Institute is investigating requirements for using Virtual Environments (VE) in training dismounted soldiers. This experiment investigated full body representation (generic) versus a hand linked pointer on movement performance in an office building interior during a search task. The search task was used as a representative dismounted soldier activity in urban environments. The VE used a biocular Head Mounted Display (HMD) with head coupled and body referenced movement control. Sensors enabled participants to walk through the VE while performing the search task in six repeated trials. Movement time and number of collisions during discrete phases of the search task revealed no significant differences found between full body and pointer representations, although significant improvement was found over repeated trials. Field of view is discussed as a possible intervening aspect. A Simulator sickness questionnaire (SSQ) was administered before, during, immediately after the experiment, and after a recovery period. Significant changes in the SSQ were found over the course of the experiment, but were not related to the body representation condition. The results indicate a rapid onset of symptoms followed by some adaptation to the VE, and rapid recovery. The Immersive Tendencies Questionnaire administered pre-experiment, and the Presence Questionnaire administered post-experiment, were not significantly related to the body representation conditions.
Publisher:
ISBN:
Category : Soldiers
Languages : en
Pages : 46
Book Description
The U.S. Army Research Institute is investigating requirements for using Virtual Environments (VE) in training dismounted soldiers. This experiment investigated full body representation (generic) versus a hand linked pointer on movement performance in an office building interior during a search task. The search task was used as a representative dismounted soldier activity in urban environments. The VE used a biocular Head Mounted Display (HMD) with head coupled and body referenced movement control. Sensors enabled participants to walk through the VE while performing the search task in six repeated trials. Movement time and number of collisions during discrete phases of the search task revealed no significant differences found between full body and pointer representations, although significant improvement was found over repeated trials. Field of view is discussed as a possible intervening aspect. A Simulator sickness questionnaire (SSQ) was administered before, during, immediately after the experiment, and after a recovery period. Significant changes in the SSQ were found over the course of the experiment, but were not related to the body representation condition. The results indicate a rapid onset of symptoms followed by some adaptation to the VE, and rapid recovery. The Immersive Tendencies Questionnaire administered pre-experiment, and the Presence Questionnaire administered post-experiment, were not significantly related to the body representation conditions.
Motion Sickness in Virtual Environments
Author: Dennison Mark Stephen, Jr
Publisher:
ISBN: 9780355067200
Category :
Languages : en
Pages : 100
Book Description
With the increasing popularity of virtual reality, people are now experiencing motion sickness during use of head mounted displays (HMDs). This dissertation reviews the major theories on why certain body motions and visual inputs cause sickness. It then details three experiments which measure motion sickness when a person uses an HMD or a monitor to view virtual environments (VEs). In Experiment 1, seated subjects interacted with a VE using a monitor and using an HMD while physiological signals were recorded. We found that subjects reported severe motion sickness while using an HMD but not while viewing images on a monitor. In fact, half of the subjects chose to quit the experiment after six minutes of HMD use and reported feeling nauseous at that time. It was found that stomach activity, blinking, and breathing can be used to estimate post-immersion motion sickness severity and to classify which viewing condition a subject's data originated from. Experiment 2 tested postural instability theory, which proposes that a person must exhibit body instability before motion sickness can occur. Subjects either stood on a balance board or sat in a chair while they were immersed in a rotating tunnel simulation. They used a game controller to indicate changes in their perceived vertical. A minority of subjects showed significant changes in postural sway compared to a resting baseline. However, these subjects did experience changes in their perceived vertical; the world had tilted in the direction of visual rotation. We found that subjects with less postural sway reported greater sickness, which contradicts postural instability theory. In the final experiment, subjects navigated a virtual space station while wearing an HMD or viewing a monitor and stood on a balance board. While navigating through the VE, subjects were subjected to unexpected visual motion which produced the sensation of being pushed in virtual reality. Results showed that these visual perturbations caused significantly greater postural sway. Yet, motion sickness was reported similarly when subjects wore the HMD regardless of perturbation presence or absence. These results demonstrate clearly that postural instability caused by unexpected visual change is not a prerequisite of motion sickness.
Publisher:
ISBN: 9780355067200
Category :
Languages : en
Pages : 100
Book Description
With the increasing popularity of virtual reality, people are now experiencing motion sickness during use of head mounted displays (HMDs). This dissertation reviews the major theories on why certain body motions and visual inputs cause sickness. It then details three experiments which measure motion sickness when a person uses an HMD or a monitor to view virtual environments (VEs). In Experiment 1, seated subjects interacted with a VE using a monitor and using an HMD while physiological signals were recorded. We found that subjects reported severe motion sickness while using an HMD but not while viewing images on a monitor. In fact, half of the subjects chose to quit the experiment after six minutes of HMD use and reported feeling nauseous at that time. It was found that stomach activity, blinking, and breathing can be used to estimate post-immersion motion sickness severity and to classify which viewing condition a subject's data originated from. Experiment 2 tested postural instability theory, which proposes that a person must exhibit body instability before motion sickness can occur. Subjects either stood on a balance board or sat in a chair while they were immersed in a rotating tunnel simulation. They used a game controller to indicate changes in their perceived vertical. A minority of subjects showed significant changes in postural sway compared to a resting baseline. However, these subjects did experience changes in their perceived vertical; the world had tilted in the direction of visual rotation. We found that subjects with less postural sway reported greater sickness, which contradicts postural instability theory. In the final experiment, subjects navigated a virtual space station while wearing an HMD or viewing a monitor and stood on a balance board. While navigating through the VE, subjects were subjected to unexpected visual motion which produced the sensation of being pushed in virtual reality. Results showed that these visual perturbations caused significantly greater postural sway. Yet, motion sickness was reported similarly when subjects wore the HMD regardless of perturbation presence or absence. These results demonstrate clearly that postural instability caused by unexpected visual change is not a prerequisite of motion sickness.
Technical Report
Cybersickness in Virtual Reality Versus Augmented Reality
Author: Kay Marie Stanney
Publisher: Frontiers Media SA
ISBN: 2889718123
Category : Technology & Engineering
Languages : en
Pages : 163
Book Description
Publisher: Frontiers Media SA
ISBN: 2889718123
Category : Technology & Engineering
Languages : en
Pages : 163
Book Description