ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment

Karthikeya Puttur Venkatraj; Wo Meijer; Monica Perusquía-Hernández; Gijs Huisman; Abdallah El Ali

doi:10.1145/3613904.3642425

ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment

Karthikeya Puttur Venkatraj, Wo Meijer, Monica Perusquía-Hernández, Gijs Huisman, Abdallah El Ali

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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Abstract

Virtual co-embodiment enables two users to share a single avatar in Virtual Reality (VR). During such experiences, the illusion of shared motion control can break during joint-action activities, highlighting the need for position-aware feedback mechanisms. Drawing on the perceptual crossing paradigm, we explore how haptics can enable non-verbal coordination between co-embodied participants. In a within-subjects study (20 participant pairs), we examined the effects of vibrotactile haptic feedback (None, Present) and avatar control distribution (25-75%, 50-50%, 75-25%) across two VR reaching tasks (Targeted, Free-choice) on participants’ Sense of Agency (SoA), co-presence, body ownership, and motion synchrony. We found (a) lower SoA in the free-choice with haptics than without, (b) higher SoA during the shared targeted task, (c) co-presence and body ownership were significantly higher in the free-choice task, (d) players’ hand motions synchronized more in the targeted task. We provide cautionary considerations when including haptic feedback mechanisms for avatar co-embodiment experiences.

Original language	English
Title of host publication	CHI '24: Proceedings of the CHI Conference on Human Factors in Computing Systems
Editors	Florian Floyd Mueller, Penny Kyburz, Julie R. Williamson, Corina Sas, Max L. Wilson, Phoebe Toups Dugas, Irina Shklovski
Place of Publication	New York
Publisher	ACM
Number of pages	15
ISBN (Print)	979-8-4007-0330-0
DOIs	https://doi.org/10.1145/3613904.3642425
Publication status	Published - 2024
Event	2024 CHI Conference on Human Factors in Computing Sytems, CHI 2024 - Hybrid, Honolulu, United States Duration: 11 May 2024 → 16 May 2024

Conference

Conference	2024 CHI Conference on Human Factors in Computing Sytems, CHI 2024
Country/Territory	United States
City	Hybrid, Honolulu
Period	11/05/24 → 16/05/24

Keywords

avatar co-embodiment
body ownership
co-presence
haptics
perceptual crossing
sense of agency
virtual reality

Access to Document

10.1145/3613904.3642425

3613904.3642425Final published version, 23.2 MBLicence: CC BY

Cite this

Venkatraj, K. P., Meijer, W., Perusquía-Hernández, M., Huisman, G., & El Ali, A. (2024). ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment. In F. F. Mueller, P. Kyburz, J. R. Williamson, C. Sas, M. L. Wilson, P. Toups Dugas, & I. Shklovski (Eds.), CHI '24: Proceedings of the CHI Conference on Human Factors in Computing Systems Article 100 ACM. https://doi.org/10.1145/3613904.3642425

Venkatraj, Karthikeya Puttur ; Meijer, Wo ; Perusquía-Hernández, Monica et al. / ShareYourReality : Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment. CHI '24: Proceedings of the CHI Conference on Human Factors in Computing Systems. editor / Florian Floyd Mueller ; Penny Kyburz ; Julie R. Williamson ; Corina Sas ; Max L. Wilson ; Phoebe Toups Dugas ; Irina Shklovski. New York : ACM, 2024.

@inproceedings{810bffa591b24e8185940c0113939fb6,

title = "ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment",

abstract = "Virtual co-embodiment enables two users to share a single avatar in Virtual Reality (VR). During such experiences, the illusion of shared motion control can break during joint-action activities, highlighting the need for position-aware feedback mechanisms. Drawing on the perceptual crossing paradigm, we explore how haptics can enable non-verbal coordination between co-embodied participants. In a within-subjects study (20 participant pairs), we examined the effects of vibrotactile haptic feedback (None, Present) and avatar control distribution (25-75%, 50-50%, 75-25%) across two VR reaching tasks (Targeted, Free-choice) on participants{\textquoteright} Sense of Agency (SoA), co-presence, body ownership, and motion synchrony. We found (a) lower SoA in the free-choice with haptics than without, (b) higher SoA during the shared targeted task, (c) co-presence and body ownership were significantly higher in the free-choice task, (d) players{\textquoteright} hand motions synchronized more in the targeted task. We provide cautionary considerations when including haptic feedback mechanisms for avatar co-embodiment experiences.",

keywords = "avatar co-embodiment, body ownership, co-presence, haptics, perceptual crossing, sense of agency, virtual reality",

author = "Venkatraj, {Karthikeya Puttur} and Wo Meijer and Monica Perusqu{\'i}a-Hern{\'a}ndez and Gijs Huisman and {El Ali}, Abdallah",

year = "2024",

doi = "10.1145/3613904.3642425",

language = "English",

isbn = "979-8-4007-0330-0",

editor = "Mueller, {Florian Floyd} and Penny Kyburz and Williamson, {Julie R.} and Corina Sas and Wilson, {Max L.} and {Toups Dugas}, Phoebe and Irina Shklovski",

booktitle = "CHI '24: Proceedings of the CHI Conference on Human Factors in Computing Systems",

publisher = "ACM",

address = "United States",

note = "2024 CHI Conference on Human Factors in Computing Sytems, CHI 2024 ; Conference date: 11-05-2024 Through 16-05-2024",

}

Venkatraj, KP, Meijer, W, Perusquía-Hernández, M, Huisman, G & El Ali, A 2024, ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment. in FF Mueller, P Kyburz, JR Williamson, C Sas, ML Wilson, P Toups Dugas & I Shklovski (eds), CHI '24: Proceedings of the CHI Conference on Human Factors in Computing Systems., 100, ACM, New York, 2024 CHI Conference on Human Factors in Computing Sytems, CHI 2024, Hybrid, Honolulu, United States, 11/05/24. https://doi.org/10.1145/3613904.3642425

ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment. / Venkatraj, Karthikeya Puttur; Meijer, Wo; Perusquía-Hernández, Monica et al.
CHI '24: Proceedings of the CHI Conference on Human Factors in Computing Systems. ed. / Florian Floyd Mueller; Penny Kyburz; Julie R. Williamson; Corina Sas; Max L. Wilson; Phoebe Toups Dugas; Irina Shklovski. New York: ACM, 2024. 100.

Research output: Chapter in Book/Conference proceedings/Edited volume › Conference contribution › Scientific › peer-review

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AU - Huisman, Gijs

AU - El Ali, Abdallah

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AB - Virtual co-embodiment enables two users to share a single avatar in Virtual Reality (VR). During such experiences, the illusion of shared motion control can break during joint-action activities, highlighting the need for position-aware feedback mechanisms. Drawing on the perceptual crossing paradigm, we explore how haptics can enable non-verbal coordination between co-embodied participants. In a within-subjects study (20 participant pairs), we examined the effects of vibrotactile haptic feedback (None, Present) and avatar control distribution (25-75%, 50-50%, 75-25%) across two VR reaching tasks (Targeted, Free-choice) on participants’ Sense of Agency (SoA), co-presence, body ownership, and motion synchrony. We found (a) lower SoA in the free-choice with haptics than without, (b) higher SoA during the shared targeted task, (c) co-presence and body ownership were significantly higher in the free-choice task, (d) players’ hand motions synchronized more in the targeted task. We provide cautionary considerations when including haptic feedback mechanisms for avatar co-embodiment experiences.

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AN - SCOPUS:85194840343

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BT - CHI '24: Proceedings of the CHI Conference on Human Factors in Computing Systems

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A2 - Kyburz, Penny

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PB - ACM

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Venkatraj KP, Meijer W, Perusquía-Hernández M, Huisman G, El Ali A. ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment. In Mueller FF, Kyburz P, Williamson JR, Sas C, Wilson ML, Toups Dugas P, Shklovski I, editors, CHI '24: Proceedings of the CHI Conference on Human Factors in Computing Systems. New York: ACM. 2024. 100 doi: 10.1145/3613904.3642425

ShareYourReality: Investigating Haptic Feedback and Agency in Virtual Avatar Co-embodiment

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