Cues to illumination do not cause Coren and Komoda's illusion of lightness in an ambiguous tube
| Autor: | Paul H. Schulman, Shawn Van Etten |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Depth Perception
Optical illusion business.industry Optical Illusions media_common.quotation_subject Illusion Experimental and Cognitive Psychology Sensory Systems Contrast Sensitivity Optics Pattern Recognition Visual Orientation Psychophysics Humans Depth perception Psychology business Lighting media_common |
| Zdroj: | Perceptual and motor skills. 83(3 Pt 1) |
| ISSN: | 0031-5125 |
| Popis: | The inside of a picture of a uniformly gray tube drawn with black circles appears lighter than the outside. Coren and Komoda, who first described this illusion, argued that observers take illumination into account to infer that the inside is lighter. That is, the inside of the tube should receive less illumination than the outside but reflects the same amount of light into the eyes. Observers, therefore, infer that it must be lighter. The inside of a gray tube drawn with white circles should appear lighter as well according to this account, but the experiments reported here show that the outside appears lighter in such a tube. We believe that depth perception is involved in this illusion but that lightness constancy is not. |
| Databáze: | OpenAIRE |
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