Cargando…

Differences in Stereoscopic Luster Evoked by Static and Dynamic Stimuli

We compared the classic static stereoscopic luster phenomenon with a recently described dynamic variant (“counter modulation”) to investigate whether they are related to the same or different processes. In the experiments, we presented pairs of center-surround stimuli haploscopically and measured th...

Descripción completa

Detalles Bibliográficos
Autores principales: Wendt, Gunnar, Faul, Franz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: SAGE Publications 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6537268/
https://www.ncbi.nlm.nih.gov/pubmed/31205668
http://dx.doi.org/10.1177/2041669519846133
_version_ 1783421972027277312
author Wendt, Gunnar
Faul, Franz
author_facet Wendt, Gunnar
Faul, Franz
author_sort Wendt, Gunnar
collection PubMed
description We compared the classic static stereoscopic luster phenomenon with a recently described dynamic variant (“counter modulation”) to investigate whether they are related to the same or different processes. In the experiments, we presented pairs of center-surround stimuli haploscopically and measured the effect of the contrast between center colors on perceived luster. The center colors were either static or temporally modulated. In addition, we examined five color conditions (one achromatic, two equiluminant, and two mixed conditions) and three background conditions that influence the channel-wise polarities of the contrast of the two centers to the common surround. The results for static and dynamic stimuli differed in several ways, suggesting that they depend on different mechanisms: Compared with the static version, in dynamic stimuli, luster was perceived at markedly lower contrasts, did not depend on the sign of the contrast polarities, and appeared more steady. However, both phenomena seem also similar in some respects: In both cases, equiluminant stimuli led to lustrous impressions that were considerably less strong than those evoked by stimuli containing luminance variation, and the strength of the perceived luster was generally boosted with reversed contrast polarities.
format Online
Article
Text
id pubmed-6537268
institution National Center for Biotechnology Information
language English
publishDate 2019
publisher SAGE Publications
record_format MEDLINE/PubMed
spelling pubmed-65372682019-06-14 Differences in Stereoscopic Luster Evoked by Static and Dynamic Stimuli Wendt, Gunnar Faul, Franz Iperception Article We compared the classic static stereoscopic luster phenomenon with a recently described dynamic variant (“counter modulation”) to investigate whether they are related to the same or different processes. In the experiments, we presented pairs of center-surround stimuli haploscopically and measured the effect of the contrast between center colors on perceived luster. The center colors were either static or temporally modulated. In addition, we examined five color conditions (one achromatic, two equiluminant, and two mixed conditions) and three background conditions that influence the channel-wise polarities of the contrast of the two centers to the common surround. The results for static and dynamic stimuli differed in several ways, suggesting that they depend on different mechanisms: Compared with the static version, in dynamic stimuli, luster was perceived at markedly lower contrasts, did not depend on the sign of the contrast polarities, and appeared more steady. However, both phenomena seem also similar in some respects: In both cases, equiluminant stimuli led to lustrous impressions that were considerably less strong than those evoked by stimuli containing luminance variation, and the strength of the perceived luster was generally boosted with reversed contrast polarities. SAGE Publications 2019-05-17 /pmc/articles/PMC6537268/ /pubmed/31205668 http://dx.doi.org/10.1177/2041669519846133 Text en © The Author(s) 2019 http://creativecommons.org/licenses/by/4.0/ Creative Commons CC-BY: This article is distributed under the terms of the Creative Commons Attribution 4.0 License (http://www.creativecommons.org/licenses/by/4.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access pages (https://us.sagepub.com/en-us/nam/open-access-at-sage).
spellingShingle Article
Wendt, Gunnar
Faul, Franz
Differences in Stereoscopic Luster Evoked by Static and Dynamic Stimuli
title Differences in Stereoscopic Luster Evoked by Static and Dynamic Stimuli
title_full Differences in Stereoscopic Luster Evoked by Static and Dynamic Stimuli
title_fullStr Differences in Stereoscopic Luster Evoked by Static and Dynamic Stimuli
title_full_unstemmed Differences in Stereoscopic Luster Evoked by Static and Dynamic Stimuli
title_short Differences in Stereoscopic Luster Evoked by Static and Dynamic Stimuli
title_sort differences in stereoscopic luster evoked by static and dynamic stimuli
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6537268/
https://www.ncbi.nlm.nih.gov/pubmed/31205668
http://dx.doi.org/10.1177/2041669519846133
work_keys_str_mv AT wendtgunnar differencesinstereoscopiclusterevokedbystaticanddynamicstimuli
AT faulfranz differencesinstereoscopiclusterevokedbystaticanddynamicstimuli