The Influence of Visual Perspective on Body Size Estimation in Immersive Virtual Reality

Thaler, Anne; Pujades, Sergi; Stefanucci, Jeanine K.; Creem-Regehr, Sarah H.; Tesch, Joachim; Black, Michael J.; Mohler, Betty J.

doi:10.1145/3343036.3343134

Cited by 13 publications

(13 citation statements)

References 36 publications

(31 reference statements)

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“…Importantly, both effects were independent from participants' actual body size (in contrast to previous results 75 ). The choice for bigger-sized models post-experiment seems in accordance with research showing that individuals overestimate body size, shape, and proportions [2][3][4][5][6]43 , although higher ratings for smaller-sized models during the experiment are reminiscent of body size underestimation [44][45][46][47][48][49] and studies showing that both males and females underestimate their body weight on a virtual body seen from a third-person perspective 76,77 . Other studies have suggested, however, that distortions in perceived body shape and size are dependent on several factors.…”

Section: Discussionsupporting

confidence: 81%

Perceived match between own and observed models’ bodies: influence of face, viewpoints, and body size

Coster

Sánchez-Herrero²,

Aliaga³

et al. 2020

Sci Rep

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People are generally unable to accurately determine their own body measurements and to translate this knowledge to identifying a model/avatar that best represents their own body. This inability has not only been related to health problems (e.g. anorexia nervosa), but has important practical implications as well (e.g. online retail). Here we aimed to investigate the influence of three basic visual features—face presence, amount of viewpoints, and observed model size—on the perceived match between own and observed models’ bodies and on attitudes towards these models. Models were real-life models (Experiment 1) or avatar models based on participants’ own bodies (Experiment 2). Results in both experiments showed a strong effect of model size, irrespective of participants’ own body measurements. When models were randomly presented one by one, participants gave significantly higher ratings to smaller- compared to bigger-sized models. The reverse was true, however, when participants observed and compared models freely, suggesting that the mode of presentation affected participants’ judgments. Limited evidence was found for an effect of facial presence or amount of viewpoints. These results add evidence to research on visual features affecting the ability to match observed bodies with own body image, which has biological, clinical, and practical implications.

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Section: Discussionsupporting

confidence: 81%

Perceived match between own and observed models’ bodies: influence of face, viewpoints, and body size

Coster

Sánchez-Herrero²,

Aliaga³

et al. 2020

Sci Rep

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“…This could be explained by EDI measuring body image dissatisfaction in differentiated ways (e.g., partial body shape, size, weight), while VR perspectives of e LoriCorps measured the overall body size dissatisfaction. Indeed, based on an adjusting and morphing virtual body task, Thaler et al [ 44 ] found that on working with a virtual body, participants underestimated their weight but estimated their body dimensions relatively accurately. The egocentric VR perspective substantially modifies the way users see specific body parts, such as hips, thorax, and waist, which people from both general and clinical populations seem to overestimate within the context of body size dissatisfaction [ 50 , 51 ].…”

Section: Discussionmentioning

confidence: 99%

“…Methodological strengths were also worth noting. The sample size was relatively large compared to sample sizes in other studies [ 29 , 44 ]. The current study presented some limitations, which were related to the psychometric instruments and the position of the virtual bodies.…”

Section: Discussionmentioning

confidence: 99%

“…This approach allows the user to project their personal mental representation of the body onto the creation of a virtual body. Previous studies have shown that participants tend to underestimate their weight but not their body dimension in VR body size modulation tasks (for normal-weighted participants [ 44 ] or those suffering from anorexia nervosa [ 45 ]). Moreover, body size modulation has the advantage of allowing users to “carve” specific areas of the virtual body to fit their personal mental representation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

“eLoriCorps Immersive Body Rating Scale”: Exploring the Assessment of Body Image Disturbances from Allocentric and Egocentric Perspectives

Monthuy-Blanc

Bouchard

Ouellet

et al. 2020

JCM

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The first objective of this study was to test the convergent and discriminant validity between the “eLoriCorps Immersive Body Rating Scale” and the traditional paper-based figure rating scale (FRS). The second objective was to explore the contribution of the egocentric virtual reality (VR) perspective of eLoriCorps to understanding body image disturbances (BIDs). The sample consisted of 53 female and 13 male adults. Body size dissatisfaction, body size distortion, perceived body size, and ideal body size were assessed. Overall, outcomes showed good agreement between allocentric perspectives as measured via VR and the FRS. The egocentric VR perspective produced different results compared to both the allocentric VR perspective and the FRS. This difference revealed discriminant validity and suggested that eLoricorps’ egocentric VR perspective might assess something different from the traditional conception of body dissatisfaction, which an allocentric VR perspective generally assesses. Finally, the egocentric VR perspective in assessing BIDs deserves to be studied more extensively to explore the possibility of finding two types of body image distortion: (a) an egocentric perceptual body distortion, referring to internal body sensation affected by intra-individual changes, and (b) an allocentric perceptual body distortion, referring to external body benchmarks constructed by inter-individual comparison occurring in a given cultural context.

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“…In this fashion users can fully immerse into a fictional world where they think, sense the time (Bansal, 2019) and their bodies (Thaler, 2019), and where they move based on the features of the fictional world (Brungart, 2019). This is now being actively used in medical treatment where patients can be immersed into a new world where they can get distracted from their pains and fears, and other unpleasant feelings (Yuan, 2018).…”

Section: Complete Immersion Experiencementioning

confidence: 99%

Virtual Reality: General Issues of Legal Regulation

Дремлюга¹,

Dremliuga²,

Iakovenko³

2020

JPL

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The article focuses on the general issues of legal regulation of relations that emerge in the field of application of VR technologies and presents issues associated with the regulation of development of such technologies. It looks at the features of this technology that create challenges for the development of a system of legal regulation of its application. The article also gives a perspective at major factors that make application of the existing law difficult and offers analysis of the emerging issues of its regulation. The author arrives at a conclusion that this technology is fundamentally different from the other existing technologies as it combines the properties of both physical reality and cyberspace. Among the challenges of the legal regulation of VR are a high realism, complete immersion user experience, and low cyber protection of both hardware and software components. The author evaluates several regulatory approaches, which could be used in the case of virtual reality and finds that all of them have major deficiencies. Contemporary research findings in secure application of VR in the fields of teaching and entertainment get rapidly outdated as they cannot catch up with the technology development, therefore they can only serve as a ground for the development of a system of VR regulation with consideration of this factor.

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The Influence of Visual Perspective on Body Size Estimation in Immersive Virtual Reality

Cited by 13 publications

References 36 publications

Perceived match between own and observed models’ bodies: influence of face, viewpoints, and body size

Perceived match between own and observed models’ bodies: influence of face, viewpoints, and body size

“eLoriCorps Immersive Body Rating Scale”: Exploring the Assessment of Body Image Disturbances from Allocentric and Egocentric Perspectives

Virtual Reality: General Issues of Legal Regulation

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