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Testing the mechanisms underlying improved distance judgments in virtual environments.

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    Virtual environments (VEs) can distort spatial perception. Visual-motor feedback in VEs recalibrates distance judgments by adjusting perceptual-motor relationships, improving accuracy without altering perceived size.

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    Area of Science:

    • Virtual Reality (VR) and Human Perception
    • Spatial Cognition
    • Human-Computer Interaction

    Background:

    • Head-mounted displays in virtual environments (VEs) often lead to underestimation of scale and distance.
    • Visual-motor experience in VEs can improve distance estimation accuracy, but the underlying mechanisms remain unclear.

    Purpose of the Study:

    • To investigate the mechanisms by which visual-motor feedback in VEs affects distance and size judgments.
    • To determine if visual-motor feedback recalibrates perceptual-motor relationships or broadly rescales virtual space.

    Main Methods:

    • Researchers created a deliberate mismatch between biomechanical and visual cues of self-movement within a VE.
    • The study assessed the impact of this manipulated feedback on participants' judgments of distance and object size.

    Main Results:

    • Visual-motor feedback significantly improved the accuracy of distance judgments, suggesting a recalibration of perceptual-motor relationships.
    • No evidence was found that perceived size, which was consistently underestimated, was affected by the visual-motor feedback.
    • Findings contrast with theories proposing broad spatial rescaling in VEs.

    Conclusions:

    • Visual-motor feedback in VEs primarily enhances distance perception through recalibration of perceptual-motor systems, rather than a general rescaling of the virtual space.
    • This recalibration mechanism offers a more nuanced understanding of spatial perception improvements in immersive virtual environments.