scholarly journals A Preliminary Embodiment Short Questionnaire

2021 ◽  
Vol 2 ◽  
Author(s):  
James Coleman Eubanks ◽  
Alec G. Moore ◽  
Paul A. Fishwick ◽  
Ryan P. McMahan
Keyword(s):  
Virtual Reality ◽  
Individual Factors ◽  
Body Ownership ◽  
Short Questionnaire ◽  
Preliminary Version ◽  
Virtual Avatar

Consumer virtual reality (VR) technologies have made embodying a virtual avatar during an immersive experience more feasible. The sense of embodiment toward that virtual avatar can be characterized and measured along three factors: self-location, agency, and body ownership. Some measures of embodiment have been previously proposed, but most have not been validated or do not measure the three individual factors of embodiment. In this paper, we present the construction and validation of a preliminary version of a short questionnaire that not only addresses these factors of embodiment but can also be used as an in-VR questionnaire, which we call the pESQ. By using and validating the pESQ, we provide results indicating that foot tracking significantly improves self-location and agency, and that an avatar significantly improves body ownership.

scholarly journals The Bodily Illusion in Adverse Conditions: Virtual Arm Ownership During Visuomotor Mismatch

Perception ◽  
2018 ◽  
Vol 47 (5) ◽  
pp. 477-491 ◽  
Author(s):  
Barbara Caola ◽  
Martina Montalti ◽  
Alessandro Zanini ◽  
Antony Leadbetter ◽  
Matteo Martini
Keyword(s):  
Virtual Reality ◽  
Arm Movements ◽  
Body Part ◽  
Body Ownership ◽  
Immersive Virtual Reality ◽  
Adverse Conditions ◽  
Person Perspective ◽  
First Person Perspective ◽  
Subjective Reports ◽  
Bodily Illusion

Classically, body ownership illusions are triggered by cross-modal synchronous stimulations, and hampered by multisensory inconsistencies. Nonetheless, the boundaries of such illusions have been proven to be highly plastic. In this immersive virtual reality study, we explored whether it is possible to induce a sense of body ownership over a virtual body part during visuomotor inconsistencies, with or without the aid of concomitant visuo-tactile stimulations. From a first-person perspective, participants watched a virtual tube moving or an avatar’s arm moving, with or without concomitant synchronous visuo-tactile stimulations on their hand. Three different virtual arm/tube speeds were also investigated, while all participants kept their real arms still. The subjective reports show that synchronous visuo-tactile stimulations effectively counteract the effect of visuomotor inconsistencies, but at slow arm movements, a feeling of body ownership might be successfully induced even without concomitant multisensory correspondences. Possible therapeutical implications of these findings are discussed.

scholarly journals Effects of Using Virtual Reality and Virtual Avatar on Hand Motion Reconstruction Accuracy and Brain Activity

IEEE Access ◽  
2017 ◽  
Vol 5 ◽  
pp. 23736-23750 ◽  
Author(s):  
Jacobo Fernandez-Vargas ◽  
Tapio V. J. Tarvainen ◽  
Kahori Kita ◽  
Wenwei Yu
Keyword(s):  
Virtual Reality ◽  
Brain Activity ◽  
Reconstruction Accuracy ◽  
Motion Reconstruction ◽  
Hand Motion ◽  
Virtual Avatar

scholarly journals The “embreathment” illusion highlights the role of breathing in corporeal awareness

2020 ◽  
Vol 123 (1) ◽  
pp. 420-427 ◽  
Author(s):  
Alessandro Monti ◽  
Giuseppina Porciello ◽  
Gaetano Tieri ◽  
Salvatore M. Aglioti
Keyword(s):  
Virtual Reality ◽  
Body Ownership ◽  
Immersive Virtual Reality ◽  
Visual Appearance ◽  
Body Location ◽  
Specific Position ◽  
Embodied Agent ◽  
Corporeal Awareness ◽  
Virtual Body

Recent theories posit that physiological signals contribute to corporeal awareness, the basic feeling that one has a body (body ownership) that acts according to one’s will (body agency) and occupies a specific position (body location). Combining physiological recordings with immersive virtual reality, we found that an ecological mapping of real respiratory patterns onto a virtual body illusorily changes corporeal awareness. This new way of inducing a respiratory bodily illusion, called “embreathment,” revealed that breathing is almost as important as visual appearance for inducing body ownership and more important than any other cue for body agency. These effects were moderated by individual levels of interoception, as assessed through a standard heartbeat-counting task and a new “pneumoception” task. By showing that respiratory, visual, and spatial signals exert a specific and weighted influence on the fundamental feeling that one is an embodied agent, we pave the way for a comprehensive hierarchical model of corporeal awareness. NEW & NOTEWORTHY Our body is the only object we sense from the inside; however, it is unclear how much inner physiology contributes to the global sensation of having a body and controlling it. We combine respiration recordings with immersive virtual reality and find that making a virtual body breathe like the real body gives an illusory sense of ownership and agency over the avatar, elucidating the role of a key physiological process like breathing in corporeal awareness.

scholarly journals Virtual reality improves embodiment and neuropathic pain caused by spinal cord injury

Neurology ◽  
2017 ◽  
Vol 89 (18) ◽  
pp. 1894-1903 ◽  
Author(s):  
Polona Pozeg ◽  
Estelle Palluel ◽  
Roberta Ronchi ◽  
Marco Solcà ◽  
Abdul-Wahab Al-Khodairy ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Virtual Reality ◽  
Neuropathic Pain ◽  
Repeated Measures ◽  
Visual Analogue Scale Pain ◽  
Body Ownership ◽  
Repeated Measures Design ◽  
Head Mounted Display ◽  
Cord Injury

Objective:To investigate changes in body ownership and chronic neuropathic pain in patients with spinal cord injury (SCI) using multisensory own body illusions and virtual reality (VR).Methods:Twenty patients with SCI with paraplegia and 20 healthy control participants (HC) participated in 2 factorial, randomized, repeated-measures design studies. In the virtual leg illusion (VLI), we applied asynchronous or synchronous visuotactile stimulation to the participant's back (either immediately above the lesion level or at the shoulder) and to the virtual legs as seen on a VR head-mounted display. We tested the effect of the VLI on the sense of leg ownership (questionnaires) and on perceived neuropathic pain (visual analogue scale pain ratings). We compared illusory leg ownership with illusory global body ownership (induced in the full body illusion [FBI]), by applying asynchronous or synchronous visuotactile stimulation to the participant's back and the back of a virtual body as seen on a head-mounted display.Results:Our data show that patients with SCI are less sensitive to multisensory stimulations inducing illusory leg ownership (as compared to HC) and that leg ownership decreased with time since SCI. In contrast, we found no differences between groups in global body ownership as tested in the FBI. VLI and FBI were both associated with mild analgesia that was only during the VLI specific for synchronous visuotactile stimulation and the lower back position.Conclusions:The present findings show that VR exposure using multisensory stimulation differently affected leg vs body ownership, and is associated with mild analgesia with potential for SCI neurorehabilitation protocols.

scholarly journals Virtual body ownership and its consequences for implicit racial bias are dependent on social context

2020 ◽  
Vol 7 (12) ◽  
pp. 201848
Author(s):  
Domna Banakou ◽  
Alejandro Beacco ◽  
Solène Neyret ◽  
Marta Blasco-Oliver ◽  
Sofia Seinfeld ◽  
...  
Keyword(s):  
Virtual Reality ◽  
Black People ◽  
Racial Bias ◽  
Implicit Bias ◽  
Short Exposure ◽  
White Female ◽  
Body Ownership ◽  
Implicit Racial Bias ◽  
Two Factors ◽  
Virtual Body

When people hold implicit biases against a group they typically engage in discriminatory behaviour against group members. In the context of the implicit racial bias of ‘White' against ‘Black' people, it has been shown several times that implicit bias is reduced after a short exposure of embodiment in a dark-skinned body in virtual reality. Embodiment usually leads to the illusion of ownership over the virtual body, irrespective of its skin colour. Previous studies have been carried out in virtual scenarios that are affectively neutral or positive. Here, we show that when the scenario is affectively negative the illusion of body ownership of White participants over a White body is lessened, and implicit bias is higher for White participants in a Black virtual body. The study was carried out with 92 White female participants, in a between-groups design with two factors: BodyType (their virtual body was White or Black) and a surrounding Crowd was Negative, Neutral or Positive towards the participant. We argue that negative affect prevents the formation of new positive associations with Black and distress leads to disownership of the virtual body. Although virtual reality is often thought of as an ‘empathy machine' our results suggest caution, that this may not be universally the case.

scholarly journals Association of Individual Factors with Simulator Sickness and Sense of Presence in Virtual Reality mediated by head-mounted displays (HMDs)

2020 ◽  
Author(s):  
Simone Grassini ◽  
Karin Laumann ◽  
Ann Kristin Luzi
Keyword(s):  
Virtual Reality ◽  
Three Dimensional ◽  
Advanced Technology ◽  
Individual Factors ◽  
Technological Advancement ◽  
Simulator Sickness ◽  
High Definition ◽  
Sense Of Presence ◽  
Head Mounted Displays ◽  
Positive Sense

Many studies have attempted to understand which individual differences may be related to the symptoms of discomfort during the virtual experience (simulator sickness) and the generally considered positive sense of being inside the simulated scene (sense of presence). Nevertheless, due to the quick technological advancement in the field of virtual reality, most of these studies are now outdated. Advanced technology for virtual reality is commonly mediated by head-mounted displays (HMDs), which aim to increase the sense of the presence of the user, remove stimuli from the external environment, and provide high definition, photo-realistic, three-dimensional images. Our results showed that motion sickness susceptibility and simulator sickness are related and neuroticism may be associated and predict simulator sickness. Furthermore, the results showed that people who are more used to playing video-games are less susceptible to simulator sickness; female participants reported more simulator sickness compared to males (but only for nausea-related symptoms). Female participants also experienced a higher sense of presence compared to males. We suggests that published findings on simulator sickness and the sense of presence in virtual reality environments need to be replicated with the use of modern HMDs.

The Golden Rule as a Paradigm for Fostering Prosocial Behavior With Virtual Reality

2021 ◽  
pp. 096372142110469
Author(s):  
Mel Slater ◽  
Domna Banakou
Keyword(s):  
Virtual Reality ◽  
Prosocial Behavior ◽  
Implicit Attitudes ◽  
Golden Rule ◽  
Helping Behavior ◽  
Ethical Principle ◽  
Body Ownership ◽  
Positive Form ◽  
Negative Form ◽  
Virtual Body

The Golden Rule of ethics in its negative form states that you should not do to others what you would not want others to do to you, and in its positive form states that you should do to others as you would want them to do to you. The Golden Rule is an ethical principle, but in virtual reality (VR), it can also be thought of as a paradigm for the promotion of prosocial behavior. This is because in VR, you can directly experience harm that you inflicted or were complicit in inflicting from the embodied perspective of the victim. This use of what we refer to as the Golden Rule Embodiment Paradigm (GREP) relies on participants in VR having the illusion of body ownership over a virtual body. In this article, we introduce virtual embodiment and the consequent illusion of ownership over the virtual body, and describe how this phenomenon has been utilized to influence implicit attitudes. We then introduce the GREP and give examples of studies in which it enhanced helping behavior.

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