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Am I (Not) a Ghost? Leveraging Affordances to Study the Impact of Avatar/Interaction Coherence on Embodiment and Plausibility in Virtual Reality

Article dans une revue avec comité de lecture
Author
DUFRESNE, Florian
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
DUBOSC, Charlotte
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
ccLEFROU, Titouan
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
ccGORISSE, Geoffrey
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]
ccCHRISTMANN, Olivier
211916 Laboratoire Angevin de Mécanique, Procédés et InnovAtion [LAMPA]

URI
http://hdl.handle.net/10985/26285
DOI
10.1109/tvcg.2025.3549136
Date
2025-03-07
Journal
IEEE Transactions on Visualization and Computer Graphics

Abstract

The way users interact with Virtual Reality (VR) environments plays a crucial role in shaping their experience when embodying an avatar. How avatars are perceived by users significantly influences their behavior based on stereotypes, a phenomenon known as the Proteus effect. The psychological concept of affordances may also appear relevant when it comes to interact through avatars and is yet underexplored. Indeed, understanding how virtual representations suggest possibilities for action has attracted considerable attention in the human-computer interaction community, but only few studies clearly address the use of affordances. Of particular interest is the fact aesthetic features of avatars may signify false affordances, conflicting with users' expectations and impacting perceived plausibility of the depicted situations. Recent models of congruence and plausibility suggest altering the latter may result in unexpected consequences on other qualia like presence and embodiment. The proposed research initially aimed at exploring the operationalization of affordances as a tool to investigate the impact of congruence and plausibility manipulations on the sense of embodiment. In spite of a long and careful endeavor materialized by a preliminary assessment and two user studies, it appears our participants were primed by other internal processes that took precedence over the perception of the affordances we selected. However, we unexpectedly manipulated the internal congruence following repeated exposures (mixed design), causing a rupture in plausibility and significantly lowering scores of embodiment and task performance. The present research then constitutes a direct proof of a relationship between a break in plausibility and a break in embodiment

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