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Updated: Sep 16, 2025

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Visualizing Visual Adaptation
Published on: April 24, 2017
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The unfathomable richness of seeing
Andrew M Haun1, Giulio Tononi1
1Center for Sleep and Consciousness, Department of Psychiatry, University of Wisconsin-Madison, Madison, WI, USA.
Trends in Cognitive Sciences
|July 4, 2025
Summary
Visual perception is far richer than commonly believed, extending beyond high-level summaries to include detailed feature groupings and a fundamental spatial field. This profound richness means much of our visual experience is consciously inaccessible.
Area of Science:
- Philosophy of Mind
- Cognitive Science
- Neuroscience
Background:
- The prevailing view suggests visual experience is sparse, relying on high-level summaries.
- This perspective questions the detailed content of visual perception.
Purpose of the Study:
- To challenge the notion of sparse visual experience.
- To propose that seeing is fundamentally rich and detailed.
- To introduce a multi-layered model of visual phenomenology.
Main Methods:
- Distinguishing three levels of visual phenomenology: high-level categorizations, mid-level feature groupings, and a fundamental spatial field.
- Arguing for the hierarchical dependency between these levels.
Main Results:
- Seeing objects necessitates perceiving their constituent groupings.
- Perceiving groupings requires awareness of the underlying spatial field.
- Even basic spatial awareness implies rich phenomenal structure.
Conclusions:
- Visual experience possesses unfathomable richness.
- A significant portion of visual content, despite being perceived, is not consciously usable, reportable, or memorable.
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