The spatiotemporal properties of the Craik-O'Brien-Cornsweet effect are consistent with 'filling-in'
| Autor: | Mandyam V. Srinivasan, Ted Maddess, MP Davey |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Brightness
Time Factors Light Psychometrics media_common.quotation_subject Cortical processing Velocity Illusion Luminance Contrast Sensitivity Optics medicine Humans Lateral interactions media_common Visual Cortex Illusory brightness Optical illusion business.industry Filling-in Optical Illusions Craik–O’Brien–Cornsweet effect Sensory Systems Ophthalmology Visual cortex medicine.anatomical_structure Pattern Recognition Visual Sensory Thresholds Regression Analysis Spatial frequency Percept business Psychology Mathematics |
| Zdroj: | Vision research. 38(13) |
| ISSN: | 0042-6989 |
| Popis: | The Craik–O'Brien–Cornsweet effect (COCE) is an illusion in which luminance discontinuities give rise to illusory brightness. One hypothesised mechanism for the induction of illusory brightness is that the cortex constructs a brightness percept from edge information by a lateral ‘filling-in’ process. A requirement for the filling-in hypothesis is that ability of the illusion to form would be limited by the speed of propagation of the filling-in. The results presented here from three methods indicate that in the case of COCE gratings brightness information propagates at a fixed speed across the central visual field of about 19°/s, and across visual areas V1 or V2 at 155 or 205 (±20) mm/s, respectively. |
| Databáze: | OpenAIRE |
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