An illusion induced by an illusion -perceptual filling-in of coloured negative afterimages
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- Schleiklinikum Schleswig, Kinderpsychiatrie, 24118 Schleswig, Germany
- Justus Liebig University Giessen, Experimental Psychology and Cognitive Science, 35394 Giessen, Germany
- Dept. of Neurology, University Hospital, Breisacher Strasse 64, Freiburg 79106, Germany
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- Date:
- Received 20 September 2009 17:46 UTC; Posted 21 September 2009
- Subjects:
- Neuroscience
- Abstract:
Visual filling-in relates to a perceptual phenomenon in which a stimulus pattern apparently undergoes dynamic changes assuming an attribute such as colour, texture, or brightness from the surround. This perceptual completion effect has up to now been shown only for real images. Here, we present filling-in in negative afterimages, a phenomenon not yet reported. Using coloured disk-ring patterns for stimuli, we demonstrate that afterimage filling-in arises independently, and is not simply a replica of filling-in observed in real images. Such filling-in does not occur when the afterimage is elicited dichoptically, suggesting its emergence within the monocular visual pathway. In this way, our findings indicate that filling-in under certain conditions may derive from an active neural mechanism located at low levels of the visual pathway.
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- This document is licensed to the public under the Creative Commons Attribution 3.0 License
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Geremek, Adam, Hamburger, Kai, and Spillmann, Lothar. An illusion induced by an illusion -perceptual filling-in of coloured negative afterimages. Available from Nature Precedings <http://hdl.handle.net/10101/npre.2009.3789.1> (2009)
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