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Illusion of visual stability through active perceptual serial dependence
Mauro Manassi1,2, David Whitney1,3,4
1Department of Psychology, University of California, Berkeley, CA, USA.
Science Advances
|January 12, 2022
Summary
Our visual system creates a stable perception by continuously smoothing visual input over time. This process, known as serial dependence, can cause us to misperceive changing objects as static due to past visual experiences.
Area of Science:
- Cognitive Neuroscience
- Visual Perception
- Psychology
Background:
- Perceptual experience is remarkably stable despite a dynamic visual world.
- The mechanisms underlying visual stability are not fully understood.
Purpose of the Study:
- To investigate the online mechanisms responsible for visual stability.
- To demonstrate how past visual experience influences current perception.
Main Methods:
- Introduction of a novel visual illusion demonstrating continuous perceptual smoothing.
- Analysis of how object appearance is affected by recent visual history (up to 15 seconds).
Main Results:
- A new visual illusion reveals an online smoothing mechanism in perception.
- Physically changing objects can be misperceived as unchanging due to this smoothing.
- Object appearance is significantly biased by visual experience up to 15 seconds prior.
Conclusions:
- The visual system employs an active serial dependence mechanism for perceptual smoothing.
- This mechanism leads to illusory visual stability by biasing perception toward past experiences.
- Serial dependence directly links visual representations to perceived stability in daily life.
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