The inner tube effect
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View abstract on PubMed
Summary
This summary is machine-generated.A novel size illusion causes targets to appear to shrink or grow within a narrow tube, depending on contrast. This visual perception effect, observed in static and dynamic displays, is explored with an interactive demo.
Area Of Science
- Visual perception
- Psychophysics
- Optical illusions
Background
- The "rocking line" illusion (RLI) demonstrates dynamic visual effects.
- Previous research has explored various size and contrast-dependent visual phenomena.
Purpose Of The Study
- To describe a new size illusion.
- To investigate the influence of contrast and display scale on this illusion.
- To provide an interactive tool for exploring the illusion's parameters.
Main Methods
- Observation of the size illusion in static and dynamic visual displays.
- Analysis of the relationship between contrast steps and perceived size change.
- Development of an online, interactive demo to explore the illusion's parameter space.
Main Results
- A novel size illusion was identified where targets appear to change size within a narrow tube.
- The direction of perceived size change (shrinking or growing) is determined by the contrast step between display elements.
- The overall scale of the display influences the magnitude of the size illusion.
Conclusions
- The contrast step between display elements is a critical factor in this novel size illusion.
- The illusion is observable in both dynamic and static visual contexts.
- The findings contribute to our understanding of visual perception and size constancy mechanisms.
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