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Updated: Jun 14, 2025
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Visualizing Visual Adaptation
Published on: April 24, 2017
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Varieties of pictorial vision.
Jan Koenderink1, Andrea van Doorn2, Johan Wagemans1
1KU Leuven, Leuven, Belgium.
I-Perception
|September 6, 2024
Summary
Visual perception varies greatly between individuals, challenging standard models. Many people may lack intuitive depth perception, suggesting a new form of aphantasia.
Area of Science:
- Cognitive Psychology
- Visual Perception Research
- Experimental Phenomenology
Background:
- Understanding pictorial awareness is crucial for visual perception research.
- Current models of visual processing often assume a universal framework for interpreting images.
- The study addresses the variability in how individuals perceive pictorial geometry.
Purpose of the Study:
- To investigate the nature of pictorial awareness using experimental phenomenology.
- To explore individual differences in the perception of pictorial geometry.
- To challenge established assumptions in visual perception, such as "inverse optics".
Main Methods:
- Employed experimental phenomenology with over 90 naïve participants.
- Utilized one-shot trials due to the inability to view the exact same picture twice.
- Focused on theme and variation, with six variations on pictorial geometry (2D and 3D).
Main Results:
- Observed significant idiosyncratic deviations from veridical perception, exceeding typical textbook "effects."
- Found that observers use arbitrary heuristics for formally related tasks, questioning a common formal framework.
- Identified a notable fraction of the population lacking intuitive monocular stereopsis.
Conclusions:
- The assumption of a common formal framework in visual perception appears unsound.
- "Inverse optics" may be a misleading concept in understanding pictorial awareness.
- The findings suggest a potential, unrecognized form of aphantasia related to visual awareness.
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