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    Virtual reality (VR) avatar appearance and redirection direction significantly impact user perception. A hand-shaped avatar and redirection toward the body midline increase the detection threshold in VR experiences.

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    Area of Science:

    • Human-Computer Interaction
    • Virtual Reality
    • Perception

    Background:

    • Virtual reality (VR) systems rely on user interaction with virtual avatars.
    • Understanding factors influencing user perception within VR is crucial for effective system design.
    • Redirection techniques are used to manipulate user movement in VR, but their perceptual impact needs further study.

    Purpose of the Study:

    • To investigate the influence of avatar appearance and body part control on redirection detection thresholds in VR.
    • To determine how avatar shape (hand vs. abstract) and redirection direction (toward vs. away from midline) affect user perception.

    Main Methods:

    • Experiments were conducted comparing hand and foot control of two avatar types: hand-shaped and abstract spherical.
    • Redirection detection thresholds were measured under different avatar appearances and redirection directions.
    • Statistical analysis was performed to identify significant differences in thresholds.

    Main Results:

    • The hand-shaped avatar significantly increased the redirection detection threshold by 21% compared to the abstract avatar, regardless of the body part used.
    • Redirection toward the body midline increased the detection threshold by 49% compared to redirection away from the midline.
    • No significant difference in detection thresholds was found between hand and foot manipulations.

    Conclusions:

    • Avatar appearance and redirection direction are key factors influencing user perception and detection thresholds in VR.
    • These findings provide insights for designing more immersive and intuitive full-body VR interactions.
    • The results have implications for the development of human augmentation systems leveraging VR technology.