Effects of rest frames on cybersickness and oscillatory brain activity

Chang, Eunhee; Hwang, In Cheol; Jeon, Hong Jun; Chun, Yeseul; Kim, Hyun Taek; Park, Changhoon

doi:10.1109/iww-bci.2013.6506631

Cited by 33 publications

(22 citation statements)

References 4 publications

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“…Another thing to consider is the research done on independent visual backgrounds (IVB) [10] also referred to recently as "rest frames" [6]. In these studies it was shown that providing a view of the real world (often a view of some part of the laboratory) or a graphical grid structure inside the VE, would give the user a stable frame of eference and reduce nausea.…”

Section: Nauseamentioning

confidence: 99%

Exploring the effects of image persistence in low frame rate virtual environments

Zielinski

Rao²,

Sommer³

et al. 2015

2015 IEEE Virtual Reality (VR)

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In virtual reality applications, there is an aim to provide real time graphics which run at high refresh rates. However, there are many situations in which this is not possible due to simulation or rendering issues. When running at low frame rates, several aspects of the user experience are affected. For example, each frame is displayed for an extended period of time, causing a high persistence image artifact. The effect of this artifact is that movement may lose continuity, and the image jumps from one frame to another. In this paper, we discuss our initial exploration of the effects of high persistence frames caused by low refresh rates and compare it to high frame rates and to a technique we developed to mitigate the effects of low frame rates. In this technique, the low frame rate simulation images are displayed with low persistence by blanking out the display during the extra time such image would be displayed. In order to isolate the visual effects, we constructed a simulator for low and high persistence displays that does not affect input latency. A controlled user study comparing the three conditions for the tasks of 3D selection and navigation was conducted. Results indicate that the low persistence display technique may not negatively impact user experience or performance as compared to the high persistence case. Directions for future work on the use of low persistence displays for low frame rate situations are discussed.

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Section: Nauseamentioning

confidence: 99%

Exploring the effects of image persistence in low frame rate virtual environments

Zielinski

Rao²,

Sommer³

et al. 2015

2015 IEEE Virtual Reality (VR)

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“…Por otra parte, algunos autores (p.ej., Chang et al, 2013;LaViola, 2000) sugieren usar "plataformas de movimiento" permitiendo al usuario dentro del ambiente de RV conseguir tanto estimulación vestibular como estimulación visual. Otras posibilidades sugeridas son, realizar diversas tareas de entrenamiento y adaptación dentro del ambiente de RV antes de utilizarlo; estas tareas podrían requerir la aceleración lineal o rotacional y ser activadas gradualmente durante la inmersión, para no provocar un impacto negativo en los sistemas vestibular y visual de los usuarios.…”

Section: Conclusionesunclassified

Los efectos secundarios negativos de la inmersión con realidad virtual en poblaciones clínicas que padecen ansiedad

Quintana

Bouchard

Serrano

et al. 2015

RPPC

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Resumen: Pocos estudios se han centrado en los efectos secundarios negativos generados por la inmersión con realidad virtual (RV) en poblaciones clínicas que padecen ansiedad. Estos efectos son conocidos como "cibermareos" o "cybersickness". A partir de una revisión bibliográfica que combinó las palabras clave cybersickness y anxiety, se identificaron seis estudios que abordan estos tópicos. Estos estudios fueron revisados en el presente trabajo a fin de: (1) establecer una panorá-mica general de la prevalencia de los cibermareos en población clínica; (2) analizar la validez del Simulator Sickness Questionnaire, utilizado en muestras clínicas que padecen ansiedad y; (3) comprender mejor la superposición de los cibermareos y los síntomas inducidos por la ansiedad. Las conclusiones del presente trabajo, proporcionan reflexiones interesantes que pueden ser de utilidad para los profesionales de la salud que utilizan la RV como herramienta de tratamiento en personas que padecen ansiedad.Palabras clave: Cibermareos; realidad virtual; ansiedad. The negative side effects of virtual reality immersion in clinical populations with anxietyAbstract: Few studies have focused on the negative side effects caused by the immersion in virtual reality (VR) in clinical populations with anxiety. These effects are known as "cybersickness". Through a literature review that combined the keywords cybersickness and anxiety, six studies addressing these topics were identified. These studies were reviewed in this paper in order to: (1) establish an overview of the prevalence of cybersickness in clinical population; (2) analyze the validity of the Simulator Sickness Questionnaire, using clinical samples with anxiety; (3) better understand the overlap of cybersickness and anxiety induced symptoms. The findings of this study provide interesting insights that may be useful for health professionals who use VR as a treatment tool for people with anxiety.Keywords: Cybersickness; virtual reality; anxiety. INTRODUCCIÓNEl uso de la realidad virtual (RV) ha despertado durante más de diez años, el interés de los Canadá. E -mail: stephane.bouchard@uqo.ca Agradecimientos: Este trabajo ha sido posible gracias a la Chaire de Recherche en Cyberpsychologie Clinique, en colaboración con l'Université du Québec en Outaouais. Y a la ayuda para estancias de movilidad en el extranjero de la Universidad Jaime I E-2014-23. clínicos y los investigadores, ya que permite a los usuarios hacer frente a situaciones temidas mediante ambientes estandarizados que emulan la realidad, y los cuales son capaces de evocar estados emocionales como la ansiedad, cogniciones y comportamientos que son muy similares a los que son experimentados en la vida cotidiana (Wiederhold y Bouchard, 2014). Aunque el uso de esta tecnología tiene muchas ventajas, los efectos sobre la salud y la seguridad de los usuarios siguen siendo áreas sin explorar. A menudo estos aspectos son abordados por los comités éticos de investigación

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“…Several researchers have proposed different approaches to reduce cybersickness during rotation and translation [9,15,19,29]. One approach involves adding a depth of field blur effect during rotation, which simulates the focusing of the eyes at a different depth.…”

Section: Techniques To Reduce Cybersicknessmentioning

confidence: 99%

“…In addition, other researchers proposed methods to reduce cybersickness based on increasing sense of embodiment and reducing vection. Chang et al [9] proposed using rest frame (e.g., using a cockpit) to reduce cybersickness by "delaying the onset of cybersickness by alleviating users' attention or perception load". Furthermore, using a virtual nose or a user avatar can also reduce cybersickness since it increases the sense of embodiment [21], in accordance with the postural instability theory.…”

Section: Dorado and Figueroamentioning

confidence: 99%

“…Furthermore, using a virtual nose or a user avatar can also reduce cybersickness since it increases the sense of embodiment [21], in accordance with the postural instability theory. Chang et al [9] used rest frames with a virtual roller coaster, and report total SSQ significantly decreased by around 10% compared to a condition without rest frames. Like other studies, the authors did not evaluate if rest frame affect presence and performance, nor did they address how comprehensively it could be used in other game scenarios.…”

Section: Dorado and Figueroamentioning

confidence: 99%

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Discrete Viewpoint Control to Reduce Cybersickness in Virtual Environments

Farmani¹

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Cybersickness in virtual reality (VR) is an on-going problem, despite recent advances in head-mounted displays (HMDs). In this thesis, we propose and evaluate a method for reducing the onset of cybersickness caused by illusions of self-motion (vection), when using stationary VR setups. Discrete viewpoint control techniques have been recently used by some VR developers and rely on reducing optic flow via inconsistent displacement. We propose two different techniques based on discrete movements in translational and rotational viewpoint movements. We ran two different user studies and measure participant cybersickness levels via the widely used Simulator Sickness Questionnaire (SSQ), as well as user reported levels of nausea, presence, and objective error rates. Overall, our results indicate that both viewpoints snapping and translation snapping significantly reduced SSQreported cybersickness levels by 40% for rotational viewpoint movement, and 50% for translational viewpoint movement. Both techniques resulted in a reduction in participant nausea levels, especially with longer VR exposure. Presence levels, error rate, and performance were not significantly different when using viewpoint snapping, or translation snapping as compared to a control condition with continuous viewpoint motion.ii Acknowledgments This is a genuine pleasure to express my deepest thanks to my mentor and supervisor Dr. Robert Teather from the School of Information Technology. This thesis would not be possible without his spectacular and brilliant guides and his financial and spiritual help. I extremely grateful to have advisors like Dr. Teather who accept my supervision and really improve my research skills beyond my expectations and imagination. I appreciate his ability to understand me as an international student. Thank for endeavoring my English Level, my writings and all the editing process with the patient.

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Effects of rest frames on cybersickness and oscillatory brain activity

Cited by 33 publications

References 4 publications

Exploring the effects of image persistence in low frame rate virtual environments

Exploring the effects of image persistence in low frame rate virtual environments

Los efectos secundarios negativos de la inmersión con realidad virtual en poblaciones clínicas que padecen ansiedad

Discrete Viewpoint Control to Reduce Cybersickness in Virtual Environments

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