I'm in VR!

Tecchia, Franco; Avveduto, Giovanni; Brondi, Raffaello; Carrozzino, Marcello; Bergamasco, Massimo; Alem, Leila

doi:10.1145/2671015.2671123

Cited by 31 publications

(6 citation statements)

References 14 publications

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“…The kinematics of the avatar were realized in 3DS Max and implemented in the virtual scenario as an animated 3D mesh. The Virtual reality-EEG experiment was performed in an immersive three-dimensional immersive virtual environment rendered in CAVE by means of XVR 2.1 (Tecchia et al, 2014). Participants observed the virtual environment displayed through the Optoma 3D active glasses while their head position was tracked in real-time by means of an Optitrack System composed by eight infrared cameras placed inside the CAVE.…”

Section: Apparatus and Stimulimentioning

confidence: 99%

Selective influence of dopamine on electrocortical signatures of error monitoring: a combined EEG and immersive virtual reality study in Parkinson’s disease

Pezzetta

Ozkan

Era

et al. 2022

Preprint

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The saliency of detecting errors in one's own and other's actions is likely linked to the discrepancy between intended or expected and produced or observed output. Salient events seem related to dopamine, the balance of which is profoundly altered in Parkinson's disease (PD). EEG studies in healthy participants indicate that the occurrence of errors in observed actions triggers a variety of electrocortical indices (like mid-frontal theta activity and the Error Positivity, oPe), that seem to map different aspects of error detection and performance monitoring. Whether these indices are differently modulated by dopamine in the same individual has never been investigated. To explore this issue, we recorded EEG markers of error detection by asking healthy controls (HCs) and PD patients to observe ecological reach-to-grasp a glass actions performed by a virtual arm seen in first person perspective. PD patients were tested under their dopaminergic medication ('on-condition'), and after dopaminergic withdrawal ('off-condition'). HCs showed a clear oPe and an increase of theta power during the observation of erroneous vs. correct actions. In PD patients, oPe responses were always preserved. Crucially, however, an error-related increase of theta power was found in 'on' but not in 'off' state PD patients. Thus, different EEG error signatures may index the activity of independent systems and error-related theta power is selectively modulated by dopamine depletion. Our findings may pave the way to the discovery of dopamine-related biomarkers of higher-order motor cognition dysfunctions that may have crucial theoretical and applied implications.

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Section: Apparatus and Stimulimentioning

confidence: 99%

Selective influence of dopamine on electrocortical signatures of error monitoring: a combined EEG and immersive virtual reality study in Parkinson’s disease

Pezzetta

Ozkan

Era

et al. 2022

Preprint

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“…However, such an interaction with food samples is unnatural and restrictive. The application of a mixed-reality-simulated context which merges the VR-immersed environment with the natural interaction between users and real-world elements, such as hands and foods, enhances the natural interactions in the virtual context [ 24 , 49 ]. Moreover, this augmented reality might be another option that can be used to enable the users to see the real food product, since it can transfer the virtual environmental information into the user’ real-life environment in real time [ 50 ].…”

Section: Discussionmentioning

confidence: 99%

Food Desires and Hedonic Discrimination in Virtual Reality Varying in Product–Context Appropriateness among Older Consumers

Xiao

Pérez-Cueto

Bredie

2022

Foods

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Immersive virtual reality (VR) videos can replicate complex real-life situations in a systematic, repeatable and versatile manner. New product development trajectories should consider the complexities of daily life eating situations. The creation of immersive contexts of a product with varying levels of appropriateness could be a useful tool for product developers in evaluating the extent to which context may influence food acceptance and eating behavior. This study explored virtual reality (VR) as an efficient context-enhancing technology through evaluations of protein-enriched rye breads and compared the effects of a VR-simulated congruent (VR restaurant) and incongruent (VR cinema) contexts on the acceptance in older consumers. A total of 70 participants were immersed in the two VR contexts and a neutral control context in a randomized order. The responses indicating the desire and liking for rye breads were measured, and the extent of immersion during context exposure was assessed by levels of the sense of presence and engagement. Immersive VR induced positive sensations of presence and a heightened level of engagement. The VR restaurant and neutral contexts were perceived as more appropriate for consuming rye breads and induced higher desire and liking for rye breads, which supported the notion of the alignment of congruent contexts with food desire and liking. The study provides new perspectives, practical methodologies, and discoveries in regard to the creation and application of VR-immersed contexts in food product evaluation. Moreover, it focused on a consumer segment (older consumers) that has seldom been investigated in previous relevant studies. The findings suggest that immersive VR technology, as a tool for evaluating contextual factors, is important for new product development. The good user experience among older consumers further indicated the potential value of VR as a context-enhancing tool for product development.

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“…For the most immersive interface, that is, HMD/WEA, we employed Leap motion and Myo armbands to visualize the user's hands in a virtual environment and recognize hand gestures, respectively. The use of Leap allows the user to recognize his/her hand position in the first‐person view, which improves virtual presence and enables accurate interaction . We also applied electromyograms of a Myo armband that supports sequential gesture recognition in an accurate manner without being affected by the vision of the user's hands.…”

Section: Methodsmentioning

confidence: 99%

“…The display fidelity of the HMD was higher than the monitor . Similarly, the interaction fidelity of the wearable device was higher than the keyboard or joypad . Based on the integration of different input and output fidelities, the interface fidelity can be arranged in ascending order as follows: MON/KEY, HMD/JOY, HMD/WEA.…”

Section: Introductionmentioning

confidence: 99%

Effects of interface on procedural skill transfer in virtual training: Lifeboat launching operation study

Jung

Ahn

2018

Computer Animation & Virtual

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A comparative study assessing the effect of interface type on procedural skill transfer during virtual training is presented. The aim of this research is to evaluate the transferability of two aspects of procedural skills, that is, procedural knowledge and technical skills. We established one group with a lecture and three virtual training groups with a combination of output and input devices: a monitor and keyboard/mouse, a head-mounted display (HMD) and joypad, and an HMD and wearable sensors. The task for assessment was a lifeboat launching operation that requires a participant to memorize a 10-step procedure utilizing 14 different pieces of equipment that should be manipulated in each step. Before and after training, we evaluated the participants' procedural knowledge and technical skill on a real lifeboat. The monitor and keyboard/mouse group showed the best performance in a procedural knowledge assessment that addressed visually induced recollections from the real lifeboat. Alternatively, in the assessment of technical skills that determined manipulation ability that requires word-based mnemonics, the HMD and wearable sensors group outperformed the other groups. Moreover, the results showed that the virtual training was a more efficient training format for short-term training than a lecture due to the freedom of observation viewpoint, despite simulator sickness.

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I'm in VR!

Cited by 31 publications

References 14 publications

Selective influence of dopamine on electrocortical signatures of error monitoring: a combined EEG and immersive virtual reality study in Parkinson’s disease

Selective influence of dopamine on electrocortical signatures of error monitoring: a combined EEG and immersive virtual reality study in Parkinson’s disease

Food Desires and Hedonic Discrimination in Virtual Reality Varying in Product–Context Appropriateness among Older Consumers

Effects of interface on procedural skill transfer in virtual training: Lifeboat launching operation study

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