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Afterimage watercolors: an exploration of contour-based afterimage filling-in
We investigated filling-in of colored afterimages and compared them with filling-in of “real” colors in the watercolor illusion. We used shapes comprising two thin adjacent undulating outlines of which the inner or the outer outline was chromatic, while the other was achromatic. The outlines could b...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Frontiers Media S.A.
2013
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3792352/ https://www.ncbi.nlm.nih.gov/pubmed/24115940 http://dx.doi.org/10.3389/fpsyg.2013.00707 |
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author | Hazenberg, Simon J. van Lier, Rob |
author_facet | Hazenberg, Simon J. van Lier, Rob |
author_sort | Hazenberg, Simon J. |
collection | PubMed |
description | We investigated filling-in of colored afterimages and compared them with filling-in of “real” colors in the watercolor illusion. We used shapes comprising two thin adjacent undulating outlines of which the inner or the outer outline was chromatic, while the other was achromatic. The outlines could be presented simultaneously, inducing the original watercolor effect, or in an alternating fashion, inducing colored afterimages of the chromatic outlines. In Experiment 1, using only alternating outlines, these afterimages triggered filling-in, revealing an “afterimage watercolor” effect. Depending on whether the inner or the outer outline was chromatic, filling-in of a complementary or a similarly colored afterimage was perceived. In Experiment 2, simultaneous and alternating presentations were compared. Additionally, gray and black achromatic contours were tested, having an increased luminance contrast with the background for the black contours. Compared to “real” color filling-in, afterimage filling-in was more easily affected by different luminance settings. More in particular, afterimage filling-in was diminished when high-contrast contours were used. In the discussion we use additional demonstrations in which we further explore the “watercolor afterimage.” All in all, comparisons between both types of illusions show similarities and differences with regard to color filling-in. Caution, however, is warranted in attributing these effects to different underlying processing differences. |
format | Online Article Text |
id | pubmed-3792352 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2013 |
publisher | Frontiers Media S.A. |
record_format | MEDLINE/PubMed |
spelling | pubmed-37923522013-10-10 Afterimage watercolors: an exploration of contour-based afterimage filling-in Hazenberg, Simon J. van Lier, Rob Front Psychol Psychology We investigated filling-in of colored afterimages and compared them with filling-in of “real” colors in the watercolor illusion. We used shapes comprising two thin adjacent undulating outlines of which the inner or the outer outline was chromatic, while the other was achromatic. The outlines could be presented simultaneously, inducing the original watercolor effect, or in an alternating fashion, inducing colored afterimages of the chromatic outlines. In Experiment 1, using only alternating outlines, these afterimages triggered filling-in, revealing an “afterimage watercolor” effect. Depending on whether the inner or the outer outline was chromatic, filling-in of a complementary or a similarly colored afterimage was perceived. In Experiment 2, simultaneous and alternating presentations were compared. Additionally, gray and black achromatic contours were tested, having an increased luminance contrast with the background for the black contours. Compared to “real” color filling-in, afterimage filling-in was more easily affected by different luminance settings. More in particular, afterimage filling-in was diminished when high-contrast contours were used. In the discussion we use additional demonstrations in which we further explore the “watercolor afterimage.” All in all, comparisons between both types of illusions show similarities and differences with regard to color filling-in. Caution, however, is warranted in attributing these effects to different underlying processing differences. Frontiers Media S.A. 2013-10-08 /pmc/articles/PMC3792352/ /pubmed/24115940 http://dx.doi.org/10.3389/fpsyg.2013.00707 Text en Copyright © 2013 Hazenberg and van Lier. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms. |
spellingShingle | Psychology Hazenberg, Simon J. van Lier, Rob Afterimage watercolors: an exploration of contour-based afterimage filling-in |
title | Afterimage watercolors: an exploration of contour-based afterimage filling-in |
title_full | Afterimage watercolors: an exploration of contour-based afterimage filling-in |
title_fullStr | Afterimage watercolors: an exploration of contour-based afterimage filling-in |
title_full_unstemmed | Afterimage watercolors: an exploration of contour-based afterimage filling-in |
title_short | Afterimage watercolors: an exploration of contour-based afterimage filling-in |
title_sort | afterimage watercolors: an exploration of contour-based afterimage filling-in |
topic | Psychology |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3792352/ https://www.ncbi.nlm.nih.gov/pubmed/24115940 http://dx.doi.org/10.3389/fpsyg.2013.00707 |
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