The Craik-O'Brien-Cornsweet effect and brightness induction both proceed by the spreading of brightness information
| Autor: | MP Davey, Andrew C. James, Ted Maddess, Mandyam V. Srinivasan |
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| Rok vydání: | 1998 |
| Předmět: |
Physics
Brightness Light business.industry Optical illusion Astrophysics::High Energy Astrophysical Phenomena Astrophysics::Cosmology and Extragalactic Astrophysics Brightness induction Luminance Cortical processing Contrast Sensitivity Ophthalmology Apparent magnitude Optics Visual cortex medicine.anatomical_structure Visual Perception medicine Humans Regression Analysis Astrophysics::Solar and Stellar Astrophysics business Vision Ocular Astrophysics::Galaxy Astrophysics Visual Cortex |
| Zdroj: | Australian and New Zealand Journal of Ophthalmology. 26:S95-S97 |
| ISSN: | 1440-1606 0814-9763 |
| DOI: | 10.1111/j.1442-9071.1998.tb01387.x |
| Popis: | The Craik-O'Brien Cornsweet effect (COCE) is a visual illusion where the luminance of image boundaries sets the apparent brightness of enclosed regions. The COCE may be produced by the cortex constructing the observed brightness through a lateral 'filling-in' process: propagating brightness information from the edges of the enclosed regions towards their centres. Any such filling-in process would imply a speed of propagation.Data on the propagation speed of brightness information in two different brightness induction effects are compared using a multivariate regression analysis.We demonstrate similar non-zero speeds for the COCE and for a brightness contrast effect. |
| Databáze: | OpenAIRE |
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