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Updated: Jun 15, 2025
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MPI CyberMotion Simulator: Implementation of a Novel Motion Simulator to Investigate Multisensory Path Integration in Three Dimensions
Published on: May 10, 2012
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Contribution of low-level motion to position shifts.
Donald I A MacLeod1,2, Patrick Cavanagh3,4,5,6, Stuart Anstis1,7
1Department of Psychology, University of California San Diego, La Jolla, CA, USA.
Journal of Vision
|August 23, 2024
Summary
Motion can alter perceived locations of visual stimuli. Low-level motion processing alone causes significant position shifts, though less pronounced than when higher-level cues are present.
Area of Science:
- Visual perception
- Motion processing
Background:
- Motion can significantly alter perceived object locations.
- Motion-induced position shifts may arise from high-level (e.g., frame effects) or low-level motion detection mechanisms.
Purpose of the Study:
- To isolate and quantify the contribution of low-level motion detection to motion-induced position shifts.
- To determine if low-level motion alone can cause position shifts without explicit contours or trackable features.
Main Methods:
- Experiments were designed to eliminate explicit contours and trackable features, isolating low-level motion signals.
- Visual stimuli were presented on or near motion to assess perceived location shifts.
Main Results:
- Low-level motion alone robustly supports a shift in probe locations.
- The magnitude of shifts induced by low-level motion was approximately 20-45% of shifts observed with high-level mechanisms present.
Conclusions:
- Low-level motion processing is a significant contributor to motion-induced position shifts.
- The magnitude of position shifts is substantially reduced when only low-level motion contributes compared to when higher-level mechanisms are involved.
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