My hands? Importance of personalised virtual hands in a neurorehabilitation scenario

Heinrich, Chris; Cook, Matthew; Langlotz, Tobias; Regenbrecht, Holger

doi:10.1007/s10055-020-00456-4

Cited by 19 publications

(17 citation statements)

References 39 publications

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“…Compared to the original ART system [39], the ART VR system 2 [36] was adapted for clinical settings by making a number of modifications to fit the new clinical environment. The Leap Motion camera was moved from being attached to the front of the HMD to being placed statically in the environment.…”

Section: Clinical Art Vr Systemmentioning

confidence: 99%

“…Individualised hand textures could also be added to the system to possibly increase levels of ownership. Heinrich and colleagues [36] have created a process of using images to texture the virtual hands and a similar process could be followed to give people with stroke individually textured hands when carrying out their rehabilitation. Whether it is worth the effort to individually texture hands versus provide a wide set of skin complexions to choose from is unknown.…”

Section: Future Workmentioning

confidence: 99%

“…As a next step, as visual distractions from the real environment could disturb a person's attention/gaze to the mirrored hand illusion, an immersive VR rehabilitation system was developed. The foundational work for this has been carried out with the development of an immersive mixed-reality system that measures aspects of embodiment for mirrored/non-mirrored personalised virtual hands amongst healthy users [36]. This study focused on embodiment as an enabling component for therapeutic efficacy.…”

Section: Introductionmentioning

confidence: 99%

“…Results from an associated second study that examined personalised virtual hand size and its effect towards perceived embodiment could not detect any difference between a default sized virtual hand and a personal sized virtual hand (mirrored or non-mirrored). Since this work provokes the intended MT effect in an immersive VR environment, we used this system as a blueprint and adapted the VR system for clinical use [36]. We combined that system with an adapted BeST-ART protocol for immersive VR use to run the clinical study evaluating its feasibility, acceptability, tolerability and clinical efficacy.…”

Section: Introductionmentioning

confidence: 99%

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Feasibility and psychophysical effects of immersive virtual reality-based mirror therapy

Heinrich

Morkisch²,

Langlotz³

et al. 2022

J NeuroEngineering Rehabil

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Background Virtual reality (VR) has been used as a technological medium to deliver mirror therapy interventions with people after stroke in numerous applications with promising results. The recent emergence of affordable, off-the-shelf head-mounted displays (like the Oculus Rift or HTC Vive) has opened the possibility for novel and cost-effective approaches for immersive mirror therapy interventions. We have developed one such system, ART-VR, which allows people after stroke to carry out a clinically-validated mirror therapy protocol in an immersive virtual environment and within a clinical setting. Methods A case cohort of 11 people with upper limb paresis following first time stroke at an in-patient rehabilitation facility received three interventions over a one week period. Participants carried out the BeST mirror therapy protocol using our immersive VR system as an adjunct therapy to their standard rehabilitation program. Our clinical feasibility study investigated intervention outcomes, virtual reality acceptance and user experience. Results The results show that the combination of an immersive VR system and mirror therapy protocol is feasible for clinical use. 9 out of 11 participants showed some improvement of their affected hand after the intervention. The vast majority of the participants (9/11) reported experiencing some psycho-physical effects, such as tingling or paraesthesia, in the affected limb during the intervention. Conclusions Our findings show that immersive VR-based mirror therapy is feasible and shows effects comparable to those of conventional mirror therapy. Trial Registration Trial was registered with the ISRCTN Registry (ISRCTN34011164) on December 3, 2021, retrospectively

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Section: Clinical Art Vr Systemmentioning

confidence: 99%

Section: Future Workmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Feasibility and psychophysical effects of immersive virtual reality-based mirror therapy

Heinrich

Morkisch²,

Langlotz³

et al. 2022

J NeuroEngineering Rehabil

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show abstract

“…Research has shown that this could not only help to accelerate user adaptation but also reduce phantom limb pain and lower rejection rates through the development of long-lasting ownership illusions [51], [52]. Similarly, partial avatarization in AR could help to recover motor functions during rehabilitation after a stroke [53], as done by Heinrich et al [54]. Indeed, virtual embodiment illusions applied to paralyzed limbs were found to ease recovery by generating cognitive stimulation to the brain linked to body ownership, agency, and kinesthetic perception through visual feedback [55], [56].…”

Section: Partial Avatarizationmentioning

confidence: 99%

Being an Avatar “for Real”: A Survey on Virtual Embodiment in Augmented Reality

Genay¹,

Lécuyer

Hachet³

2022

IEEE Trans. Visual. Comput. Graphics

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Virtual self-avatars have been increasingly used in Augmented Reality (AR) where one can see virtual content embedded into physical space. However, little is known about the perception of self-avatars in such a context. The possibility that their embodiment could be achieved in a similar way as in Virtual Reality opens the door to numerous applications in education, communication, entertainment, or the medical field. This article aims to review the literature covering the embodiment of virtual self-avatars in AR. Our goal is (i) to guide readers through the different options and challenges linked to the implementation of AR embodiment systems, (ii) to provide a better understanding of AR embodiment perception by classifying the existing knowledge, and (iii) to offer insight on future research topics and trends for AR and avatar research. To do so, we introduce a taxonomy of virtual embodiment experiences by defining a "body avatarization" continuum. The presented knowledge suggests that the sense of embodiment evolves in the same way in AR as in other settings, but this possibility has yet to be fully investigated. We suggest that, whilst it is yet to be well understood, the embodiment of avatars has a promising future in AR and conclude by discussing possible directions for research.

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Exploring the effects of virtual hand appearance on midair typing efficiency

Cui

Mousas

2023

Computer Animation & Virtual

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Summary Midair typing has gradually become the potential mainstream of virtual reality (VR) typing, as it eliminates the setup of additional hardware devices and provides convenience for portable head‐mounted displays (HMDs). In midair typing, users type on a virtual keyboard while using their virtual hands. In addition to the lack of a dominant method for VR‐based midair typing, we still do not know the impact that different appearances of virtual hands could have on text input in VR. Thus, we picked a widely used midair typing method (i.e., the VR‐rendered QWERTY keyboard) and conducted a VR study to explore the effects of three hand appearances (i.e., abstract, mannequin, realistic hands) on typing efficiency in terms of typing accuracy, typing speed, and task load. Our within‐group study revealed that (1) the mannequin hand caused significantly higher performance on typing speed than the abstract and realistic hands, (2) the abstract hand caused significantly lower performance (more typing errors) on typing accuracy compared to the mannequin and realistic hands, and (3) participants rated the task load of using the abstract hand significantly higher than the mannequin and realistic hands.

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My hands? Importance of personalised virtual hands in a neurorehabilitation scenario

Cited by 19 publications

References 39 publications

Feasibility and psychophysical effects of immersive virtual reality-based mirror therapy

Feasibility and psychophysical effects of immersive virtual reality-based mirror therapy

Being an Avatar “for Real”: A Survey on Virtual Embodiment in Augmented Reality

Exploring the effects of virtual hand appearance on midair typing efficiency

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