ICAT-EGVE2022 - Posters and Demos

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https://diglib.eg.org/handle/10.2312/2633253

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Browsing ICAT-EGVE2022 - Posters and Demos by Author "Sugimoto, Maki"

Now showing 1 - 4 of 4
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    Investigating Perception of Multiple Virtual Hands using Startle Response
    (The Eurographics Association, 2022) Mashiyama, Yuki; Fukuoka, Masaaki; Teo, Theophilus; Kondo, Ryota; Sugimoto, Maki; Theophilus Teo; Ryota Kondo
    Studies have been conducted to examine the human body perception of a whole body when having multiple bodies. In this paper, we investigate how does the sense of body ownership and the sense of agency change when a user synchronously moves multiple body parts in a virtual environment. Participants in a demonstration will perform a reaching task for 150 seconds by physically moving their right hands while visualised as one or nine hands in a virtual reality environment. At the end of the reaching task, a threat stimulus is triggered and participants' electromyography are measured as an objective index of the sense of body ownership. Finally, a short survey will be conducted to query the strength of the subjective sense of body ownership and agency.
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    Mingle with an Amoeba
    (The Eurographics Association, 2022) Nakabayashi, Yuki; Arai, Tastuki; Ozaki, Miruku; Kawamura, Koki; Tsuboji, Koki; Nakagawa, Maho; Nitta, Yasuhiro; Haba, Ryotaro; Hamano, Sho; Matsutani, Yuki; Mashiyama, Yuki; Sugimoto, Maki; Theophilus Teo; Ryota Kondo
    Amoebas are microorganisms ranging in length from 25 to 400µm and are not large enough for humans to touch. Also, since they are not visible in everyday life, it isn't easy to get involved with amoebas. In this project, we create an opportunity to have simulated contact with amoebas in a virtual environment. By touching the transparent slime as if it were an amoeba, you can experience transforming the amoeba with your own hands, seeing the amoeba's reaction to being touched, and perceiving Pseudo Haptics information via visual vibrations from the amoeba.
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    The Sense of Agency, Sense of Body Ownership with a Semi-autonomous Telexistence Robot under Shared / Unshared Intention Conditions
    (The Eurographics Association, 2022) Takechi, Tohru; Nakamura, Fumihiko; Fukuoka, Masaaki; Ienaga, Naoto; Sugimoto, Maki; Theophilus Teo; Ryota Kondo
    With the increasing popularity of robots such as teleoperated semi-autonomous robots, sense of agency (SoA) and sense of body ownership (SoBO) with semi-autonomous robots is becoming increasingly important. This study investigates the changes in the SoA and SoBO when the user control weight of the robot is altered in human-robot collaboration. Through an experiment, we compared the SoA and SoBO in a pick-and-place task using a robotic arm under the conditions in which the autonomous robotic arm shared and unshared the target with the participant. The results showed that the SoA and the SoBO increased with the increase of user control weight. However, the user control weight of 75% achieved a slightly higher SoA than that of 100%.
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    Sense of Ownership, Self-location, and Gaze Responses in Virtual Rubber Hand Illusion
    (The Eurographics Association, 2022) Komori, Takumi; Ishimoto, Hiroki; Ganesh, Gowrishankar; Sugimoto, Maki; Inami, Masahiko; Kitazaki, Michiteru; Theophilus Teo; Ryota Kondo
    It is known that the illusion of body ownership, like as the rubber hand illusion, affects the proprioceptive sense of body position. In the present study, we investigated whether eye movements and pupil responses to the location where the sense of body ownership was induced were also affected. We presented a virtual left hand on a head mounted display and stroked both the virtual hand and the real left hand with a brush, while a light suddenly appeared on the virtual left hand or empty right space randomly. The participants were asked to move the eyes on the light. We found that the illusory ownership of the virtual hand occurred with proprioceptive self-location drift by the synchronous stroking, but the saccade eye movements and pupil sizes were not affected by the illusory body ownership, suggesting that the gaze responses may be independent from the self-body representation.