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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...

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Autores principales: Hazenberg, Simon J., van Lier, Rob
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2013
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.
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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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