Virtual Reality System Fidelity

McMahan, Ryan P.

doi:10.1007/978-3-319-08234-9_251-1

Cited by 9 publications

(7 citation statements)

References 17 publications

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“…Another index of task specificity that may be relevant to ensure transfer is dimensional matching. This is defined as the accuracy with which interaction methods in VEs replicate control dimensions of the real-world task [90]. VEs with inadequate dimensional matching to the real world have either fewer control dimensions (e.g., not being able to rotate a hand-held virtual object) or too many control dimensions (e.g.…”

Section: Methodsmentioning

confidence: 99%

“…VEs with inadequate dimensional matching to the real world have either fewer control dimensions (e.g., not being able to rotate a hand-held virtual object) or too many control dimensions (e.g. a virtual steering wheel with more than one degree of freedom) [90]. Interaction with virtual objects that are displayed on a 2D flat-screen has inherently fewer dimensions, as these objects have only two (x-y) coordinates [87].…”

Section: Methodsmentioning

confidence: 99%

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Learning and transfer of complex motor skills in virtual reality: a perspective review

Levac

Huber

Sternad

2019

J NeuroEngineering Rehabil

171

158

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The development of more effective rehabilitative interventions requires a better understanding of how humans learn and transfer motor skills in real-world contexts. Presently, clinicians design interventions to promote skill learning by relying on evidence from experimental paradigms involving simple tasks, such as reaching for a target. While these tasks facilitate stringent hypothesis testing in laboratory settings, the results may not shed light on performance of more complex real-world skills. In this perspective, we argue that virtual environments (VEs) are flexible, novel platforms to evaluate learning and transfer of complex skills without sacrificing experimental control. Specifically, VEs use models of real-life tasks that afford controlled experimental manipulations to measure and guide behavior with a precision that exceeds the capabilities of physical environments. This paper reviews recent insights from VE paradigms on motor learning into two pressing challenges in rehabilitation research: 1) Which training strategies in VEs promote complex skill learning? and 2) How can transfer of learning from virtual to real environments be enhanced? Defining complex skills by having nested redundancies, we outline findings on the role of movement variability in complex skill acquisition and discuss how VEs can provide novel forms of guidance to enhance learning. We review the evidence for skill transfer from virtual to real environments in typically developing and neurologically-impaired populations with a view to understanding how differences in sensory-motor information may influence learning strategies. We provide actionable suggestions for practicing clinicians and outline broad areas where more research is required. Finally, we conclude that VEs present distinctive experimental platforms to understand complex skill learning that should enable transfer from therapeutic practice to the real world.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Learning and transfer of complex motor skills in virtual reality: a perspective review

Levac

Huber

Sternad

2019

J NeuroEngineering Rehabil

171

158

View full text Add to dashboard Cite

show abstract

“…It was also found that NUIs are not always the most natural-feeling controllers and that such evaluations are highly dependent upon the quality of the NUI in question (Seibert & Shafer, 2017). Past studies of IF in particular have found that participants performing tasks in high and low IF conditions have performed better on those tasks than those in the moderate IF condition (McMahan, 2011; Mine et al, 1997; Pausch et al, 1997; Ware & Rose, 1999). The results of those past studies and this present study seem to indicate that the level of technology Biocca envisioned in the mid-1990s has not yet been achieved.…”

Section: Discussionmentioning

confidence: 91%

The effects of interaction fidelity on game experience in virtual reality.

Shafer

2021

Psychology of Popular Media

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Natural user interfaces (NUIs) have been shown to significantly enhance video gaming experiences in some cases; however, questions have been raised about how effective NUIs are at increasing sense of presence, interactivity, realism, and enjoyment in games where actions taken with the controller do not synchronize well with the actions performed in game. In an effort to investigate these questions, several games were evaluated for interaction fidelity (IF): How closely in-game actions are matched by user inputs with various controllers. Foregoing research indicates that for some activities, lower levels of IF may be more effective and "natural" than moderate or high levels of IF. This study assigned participants to virtual reality games with varying levels of IF and measured the effects of that variance on several key user experience variables. Results show that, for some variables, such as spatial presence, realism, and enjoyment, IF had little impact. However, IF was found to negatively impact perceptions of interactivity and positively impact perceptions of controller naturalness. This first foray into testing IF in the context of virtual reality games provides a starting point for a line of research that could include a wide range of games and control devices. Public Policy Relevance StatementIn this study, playing virtual reality games that require the same moves a player would use in real life was found to make players view the games as less interactive, even though they thought the controllers they were using were more natural. Players felt immersed in the game worlds and enjoyed the games no matter what controller they used. This study gives insight into how control methods influence player experiences when playing virtual reality video games.

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“…One suggestion for the analysis of the different components of the interface fidelity is to use a validated analysis frame work such as the FIFA (McMahan, 2011). …”

Section: Discussion and Design Implicationsmentioning

confidence: 99%

Achieving interface and environment fidelity in the Virtual Basic Laparoscopic Surgical Trainer

Chellali

Mentis

Miller

et al. 2016

International Journal of Human-Computer Studies

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Virtual reality trainers are educational tools with great potential for laparoscopic surgery. They can provide basic skills training in a controlled environment and free of risks for patients. They can also offer objective performance assessment without the need for proctors. However, designing effective user interfaces that allow the acquisition of the appropriate technical skills on these systems remains a challenge. This paper aims to examine a process for achieving interface and environment fidelity during the development of the Virtual Basic Laparoscopic Surgical Trainer (VBLaST). Two iterations of the design process were conducted and evaluated. For that purpose, a total of 42 subjects participated in two experimental studies in which two versions of the VBLaST were compared to the accepted standard in the surgical community for training and assessing basic laparoscopic skills in North America, the FLS box-trainer. Participants performed 10 trials of the peg transfer task on each trainer. The assessment of task performance was based on the validated FLS scoring method. Moreover, a subjective evaluation questionnaire was used to assess the fidelity aspects of the VBLaST relative to the FLS trainer. Finally, a focus group session with expert surgeons was conducted as a comparative situated evaluation after the first design iteration. This session aimed to assess the fidelity aspects of the early VBLaST prototype as compared to the FLS trainer. The results indicate that user performance on the earlier version of the VBLaST resulting from the first design iteration was significantly lower than the performance on the standard FLS box-trainer. The comparative situated evaluation with domain experts permitted us to identify some issues related to the visual, haptic and interface fidelity on this early prototype. Results of the second experiment indicate that the performance on the second generation VBLaST was significantly improved as compared to the first generation and not significantly different from that of the standard FLS box-trainer. Furthermore, the subjects rated the fidelity features of the modified VBLaST version higher than the early version. These findings demonstrate the value of the comparative situated evaluation sessions entailing hands on reflection by domain experts to achieve the environment and interface fidelity and training objectives when designing a virtual reality laparoscopic trainer. This suggests that this method could be used successfully in the future to enhance the value of VR systems as an alternative to physical trainers for laparoscopic surgery skills. Some recommendations on how to use this method to achieve the environment and interface fidelity of a VR laparoscopic surgical trainer are identified.

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Virtual Reality System Fidelity

Cited by 9 publications

References 17 publications

Learning and transfer of complex motor skills in virtual reality: a perspective review

Learning and transfer of complex motor skills in virtual reality: a perspective review

The effects of interaction fidelity on game experience in virtual reality.

Achieving interface and environment fidelity in the Virtual Basic Laparoscopic Surgical Trainer

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