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Updated: Jun 10, 2025
10:51
Frame-by-Frame Video Analysis of Idiosyncratic Reach-to-Grasp Movements in Humans
Published on: January 15, 2018
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Deconstructing the frame effect
Mohammad Shams1,2,3, Peter J Kohler2,4,5, Patrick Cavanagh1,2,6
1Department of Psychology, Glendon College, York University, Toronto, ON, Canada.
Journal of Vision
|October 10, 2024
Summary
The frame effect shifts perceived object location. Multiple probes and oscillating frames amplify this shift, while proximity to the frame
Area of Science:
- Visual Perception
- Motion Perception
- Psychophysics
Background:
- Perceived object location is influenced by surrounding motion dynamics.
- The frame effect demonstrates substantial shifts in perceived location due to a moving frame.
Purpose of the Study:
- To investigate factors contributing to the large magnitude of the frame effect.
- To analyze the influence of probe number, frame dynamics, and spatiotemporal relationships on perceived location shifts.
Main Methods:
- Three experiments were conducted manipulating probe count, frame motion (unidirectional vs. oscillating), and probe-frame spatiotemporal relationships.
- Systematic variations in frame size and probe-frame distance were analyzed.
Main Results:
- Multiple probes significantly amplified the perceived position shift.
- Oscillating frames produced more pronounced effects than unidirectional frames.
- Larger shifts were observed near the leading edge of the frame, with maximum shift distance relatively constant across frame sizes.
Conclusions:
- The number of probes, frame size, relative probe-frame distance, and frame dynamics are key determinants of the frame effect's magnitude.
- Findings elucidate the complex interplay of factors governing visual spatial perception under dynamic conditions.
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