Eccentricity dependence of the curveball illusion
| Autor: | Mathieu Biard, Rick Gurnsey |
|---|---|
| Rok vydání: | 2012 |
| Předmět: |
Adult
Male media_common.quotation_subject Motion Perception Illusion Experimental and Cognitive Psychology Stimulus (physiology) 050105 experimental psychology 03 medical and health sciences 0302 clinical medicine Sine wave Humans 0501 psychology and cognitive sciences Scaling media_common Communication business.industry 05 social sciences Mathematical analysis Size dependent Local scale General Medicine Middle Aged Illusions Visual field Peripheral vision Female Visual Fields business Psychology 030217 neurology & neurosurgery |
| Zdroj: | Canadian Journal of Experimental Psychology / Revue canadienne de psychologie expérimentale. 66:144-152 |
| ISSN: | 1878-7290 1196-1961 |
| DOI: | 10.1037/a0026989 |
| Popis: | When the Gaussian envelope of a Gabor patch moves straight down while its sine wave component drifts to the left, the Gabor is seen to move down to the left when viewed with peripheral vision (exhibiting the so-called curveball illusion) but straight down when viewed foveally. We used a nulling procedure to quantify the strength of the curveball illusion at a range of stimulus sizes and eccentricities to determine if the illusion is size dependent and whether size scaling can equate the strength of the illusion across the visual field. We find that the illusion is size dependent (illusion strength decreases with increasing stimulus size) but that size scaling is not sufficient to elicit an illusion at fixation that matches the strength of the illusion at 10°. These results suggest that certain changes in motion processing across the visual field differ in more than just the local scale of the mechanisms involved. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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