Parallel Ping-Pong: Exploring Parallel Embodiment through Multiple Bodies by a Single User

Takada, Kazuma; Kawaguchi, Midori; Uehara, Akira; Nakanishi, Yukiya; Armstrong, Mark; Verhulst, Adrien; Minamizawa, Kouta; Kasahara, Shunichi

doi:10.1145/3519391.3519408

Cited by 16 publications

(8 citation statements)

References 13 publications

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“…With the development of display technology and the spread of virtual reality technology, interaction in digital space, where the scale can be freely changed, has been proposed instead of limited physical space 1,2 . However, to interact in digital space, users must operate a cursor or virtual hand using a mouse or controller in physical space.…”

Section: Interface Using Multiple Objects With Self Movementmentioning

confidence: 99%

“…Using virtual reality and robotics technologies, interactions involving the manipulation of multiple virtual bodies and robotic avatars have been developed [1][2][3][4] . Interfaces with multiple cursors that reflect the user's mouse operations have also been proposed to facilitate pointing at targets on a large screen 5 and preventing shoulder hacking 6,7 .…”

Section: Introductionmentioning

confidence: 99%

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Exploring the Mechanism of Self-Attribution Occurrence using Multiple Dummy Cursors

Takada¹,

Watanabe²

2022

Preprint

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Virtual reality and robotics technologies have developed interactions with augmented and replicated bodies in digital space. By simultaneously moving multiple bodies in various locations in ample space, users can reach distant objects and interact with them by switching the bodies without having to make significant movements themselves. Previous researches has investigated the design interfaces for manipulation and switching in such interactions using multiple bodies based upon the user's perception of the objects. However, the mechanism by which a self-attribution arises from multiple objects reflecting self-motion is still unclear. To investigate this mechanism, we developed a dummy cursor experiment in which participants were presented with multiple independently moving dummy cursors in addition to the cursors they moved on the screen. The presented dummy cursors moved in different directions and were temporally synchronized with the participants' movements. Participants identified the cursor whose movement exactly matched the mouse they were manipulating from among the multiple dummy cursors displayed on the screen. To investigate under what conditions participants could identify the cursor they were operating, we compared the identification rates by varying the number of dummy cursors presented and how they were moved. As a result, participants could identify the cursor they were operating with a very high probability, even when there were many dummy cursors. Through these results, we discuss the occurrence of a self-attribution among multiple objects related to self-motion and the possibility of parameters contributing to self-attribution.

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Section: Interface Using Multiple Objects With Self Movementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Exploring the Mechanism of Self-Attribution Occurrence using Multiple Dummy Cursors

Takada¹,

Watanabe²

2022

Preprint

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“…One-to-many avatar embodiment can be supported in a sequential fashion, usually referred to as re-embodiment, or in a simultaneous manner, known as parallel embodiment [49,83]. Systems that support avatar re-embodiment allow users to selectively migrate between a set of robotic avatars that might be placed on dierent locations or have dierent characteristics that can be leveraged to perform various tasks [14,15,60].…”

Section: Understanding Dierent Forms Of Avatar Embodimentmentioning

confidence: 99%

“…When multiple avatar bodies are used to perform the same action, the diculties involved with parallel control are signicantly reduced [51]. If parallel embodiment is used to perform dierent actions using multiple avatar bodies, mechanisms for reducing users' cognitive burden are usually introduced in the form of automatic movement assistance [83], supported integration of multiple control paradigms [53], or simplied control options that trigger pre-determined commands [27].…”

Section: Understanding Dierent Forms Of Avatar Embodimentmentioning

confidence: 99%

“…Authors, MK, SK, KM had previous experiences developing computer systems that support the user's ability to control multiple avatars [51,83] and proposed that a similar system could be successfully employed in the context of the café. Authors HK, KT, YS, who had signicant experience managing café operations, including MN, who had been a café pilot for over 3 years, felt that a system that enabled workers to migrate between dierent OriHime avatar robots could be eective in managing customer journeys without altering the overall ow of operations, or adding new avatar robots with dierent features and capabilities.…”

Section: Development Of a New System For Parallel Avatar Controlmentioning

confidence: 99%

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Accessible Parallel Embodiment of Multiple Robotic Avatars in a Cafe

Barbareschi¹,

Kawaguchi

Kato

et al. 2022

XRDS

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Novel technological systems enabling people to control multiple robotic avatars simultaneously could support more accessible ways to multitask. An implementation of a parallel avatar system in a cafe shows that, leveraging their existing skills, remote workers with disabilities were able to utilize the system to control up to four robots, each with a different function, to assist customers in a cafe. The parallel avatar systems expand the agency and the capabilities of disabled workers, while also delivering better experiences to customers.

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Shared Avatar for Hand Movement Imitation: Subjective and Behavioral Analyses

Katsumata,

Inoue,

Toriumi

et al. 2023

IEEE Access

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Virtual co-embodiment enables sharing avatars with others in virtual environments and can be applied for training motor skills by allowing teachers to share movements with learners in first-person perspective. We conducted a task where participants were asked to imitate pre-recorded hand movements of a teacher as accurately as possible. The participant's virtual hand movements were averaged in real-time with those of the teacher (shared avatar hand). We compared their usability ratings and behavior against a controlled condition with full control of the hand (solo avatar hand). The teacher's hand was displayed facing the same or the opposite direction as the participant's hand. We hypothesized that using the shared avatar hand would improve imitation over using the solo hand, and the teacher's hand presented in the same direction is better than that in the opposite direction. Subjective ratings showed that the shared hand was easier to use than the solo hand, and the teacher's hand when presented in the same direction was easier to imitate than when presented in the opposite direction. Spatial error was less with the opposite-direction presentation than the same-direction presentation of the teacher's hand, irrespective of movement sharing. Time delay was less when the participants used the shared hand compared to when they used the solo hand, irrespective of the teacher's hand direction. These results suggest that sharing movements enhances usability and matching speed during movement imitation, and the same-direction presentation of the teacher's hand improves usability while the opposite-direction presentation improves spatial accuracy of motor imitation.

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Parallel Ping-Pong: Exploring Parallel Embodiment through Multiple Bodies by a Single User

Cited by 16 publications

References 13 publications

Exploring the Mechanism of Self-Attribution Occurrence using Multiple Dummy Cursors

Exploring the Mechanism of Self-Attribution Occurrence using Multiple Dummy Cursors

Accessible Parallel Embodiment of Multiple Robotic Avatars in a Cafe

Shared Avatar for Hand Movement Imitation: Subjective and Behavioral Analyses

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