A Full Body Steerable Wind Display for a Locomotion Interface

Kulkarni, Sandip D.; Fisher, Charles J.; Lefler, Price; Desai, Aditya; Chakravarthy, Shanthanu; Pardyjak, Eric R.; Minor, Mark A.; Hollerbach, John M.

doi:10.1109/tvcg.2015.2424862

Cited by 16 publications

(7 citation statements)

References 32 publications

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“…More findings regarding draught stimuli concerning gender effects are discussed in the later section. In summary, our results provide strong support for all research in developing wind simulation technologies (e.g., [Moon and Kim, 2004, Kulkarni et al, 2015, Ito et al, 2019).…”

Section: Contributions Of Different Modalities On User Presencesupporting

confidence: 71%

Multimodality for Passive Experience: Effects of Visual, Auditory, Vibration and Draught Stimuli on Sense of Presence

Honegger¹,

Feng²,

Rauterberg³

2021

jucs

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Adequate use of multimodal stimuli plays a crucial role in help forming the sense of presence within a virtual environment. While most of the presence research attempts to engage more sensory modalities to induce a higher sense of presence, this paper investigates the relevance of each sensory modality and different combinations on the subjective sense of presence using a specifically designed scenario of a passive experience. We chose a neutral test scenario of “waiting at a train station while a train is passing by” to avoid the potential influence of story narrative on mental presence and replicated realistic multimodal stimuli that are highly relevant to our test setting. All four stimuli - visual, auditory, vibration, and draught - with 16 possibilities of combinations were systematically evaluated with 24 participants. The evaluation was performed on one crucial aspect of presence – “realness” to reflect user presence in general. The perceived realism value was assessed using a scalometer. The findings of main effects indicate that the auditory stimuli had the most significant contribution in creating the sense of presence. The results of interaction effects suggest the impact of draught stimuli is significant in relation to other stimuli - visual and auditory. Also, the gender effects revealed that the sense of presence reported by female participants is influenced by more factors than merely adding more sensory modalities.

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Section: Contributions Of Different Modalities On User Presencesupporting

confidence: 71%

Multimodality for Passive Experience: Effects of Visual, Auditory, Vibration and Draught Stimuli on Sense of Presence

Honegger¹,

Feng²,

Rauterberg³

2021

jucs

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show abstract

“…As many people experience the sensation of wind on their entire body every day, we can easily immerse ourselves in VR presentations with wind displays. The latter can improve immersion by faithfully reproducing the motion of objects in VR environments [5], self-motions [6,12], and climates [11]. The reproduction of wind blowing from various directions is often crucial to simulate realistic wind.…”

Section: Introductionmentioning

confidence: 99%

Manipulating the Perceived Directions of Wind by Visuo-Audio-Haptic Cross-Modal Effects

Ito

Ban

Warisawa

2020

Haptics: Science, Technology, Applications

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Wind displays, which simulate the sensation of wind, have been known to enhance the immersion of virtual reality content. However, certain wind displays require an excessive number of wind sources to simulate wind from various directions. To realize wind displays with fewer wind sources, a method to manipulate the perceived directions of wind by audio-haptic cross-modal effects was proposed in our previous study. As the visuo-haptic cross-modal effect on perceived wind directions has not yet been quantitatively investigated, this study focuses on the effect of visual stimuli on the perception of wind direction. We present virtual images of flowing particles and three-dimensional sounds of wind as information to indicate wind directions and induce crossmodal effects in users. The user study has demonstrated that adding visual stimuli effectively improved the result corresponding to certain virtual wind directions. Our results suggest that perceived wind directions can be manipulated by both visuo-haptic and audio-haptic cross-modal effects.

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“…This figure illustrates the Treadport environment, and not the experiments described in this article. An overall system view of the Treadport is difficult to record, due to the active wind tunnel enclosure described in Kulkarni et al (2015). speed experiments such as Souman et al (2011), Plotnik et al (2015), and Sloot, Krogt, and Harlaar (2014), a trend is emerging that self-paced treadmills require optical flow to minimize the difference between treadmill and overground self-selected speeds.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

The Treadport: Natural Gait on a Treadmill

2019

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Objective: To evaluate the differences between walking on an advanced robotic locomotion interface called the Treadport and walking overground with healthy subjects. Background: Previous studies have compared treadmill-based and overground walking in terms of gait parameters. The Treadport’s unique features including self-selected speed capability, large belt, kinesthetic force feedback, and virtual reality environment distinguish it from other locomotion interfaces and could provide a natural walking experience for the users. Method: Young, healthy subjects ( N = 17) walked 10 meters 10 times each for both overground and the Treadport environments. Comparison between walking conditions used spatiotemporal and kinematic parameters. In addition, electromyographic data was collected for five of the 17 subjects to compare muscle activity between the two conditions. Results: Gait on the Treadport was found to have no significant differences ( p > .05) with overground walking in terms of hip and knee joint angles, cadence and stride length and stride speed, and muscle activation of the four muscle groups measured. Differences ( p < .05) were observed in ankle dorsiflexion which was reduced by 2.47 ± 0.01 degrees on the Treadport. Conclusion: Walking overground and on the Treadport is highly correlated and not significantly different in 13 of 14 parameters. Application: This study suggests that the Treadport creates an environment for natural walking experience, where natural gait of users is almost preserved, with great potential to be useful for other applications, such as gait rehabilitation of individuals with walking impairments.

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A Full Body Steerable Wind Display for a Locomotion Interface

Cited by 16 publications

References 32 publications

Multimodality for Passive Experience: Effects of Visual, Auditory, Vibration and Draught Stimuli on Sense of Presence

Multimodality for Passive Experience: Effects of Visual, Auditory, Vibration and Draught Stimuli on Sense of Presence

Manipulating the Perceived Directions of Wind by Visuo-Audio-Haptic Cross-Modal Effects

The Treadport: Natural Gait on a Treadmill

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