Binocular fusion enhances the efficiency of spot-the-difference gameplay.

Spot-the-difference, the popular childhood game and a prototypical change blindness task, involves identification of differences in local features of two otherwise identical scenes using an eye scanning and matching strategy. Through binocular fusion of the companion scenes, the game becomes a visua...

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Autores principales:	Kavitha Venkataramanan, Swanandi Gawde, Amithavikram R Hathibelagal, Shrikant R Bharadwaj
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6b4501d4f81e4d6e9f7dec33a38ddc6c
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id	oai:doaj.org-article:6b4501d4f81e4d6e9f7dec33a38ddc6c
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spelling	oai:doaj.org-article:6b4501d4f81e4d6e9f7dec33a38ddc6c2021-12-02T20:09:06ZBinocular fusion enhances the efficiency of spot-the-difference gameplay.1932-620310.1371/journal.pone.0254715https://doaj.org/article/6b4501d4f81e4d6e9f7dec33a38ddc6c2021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0254715https://doaj.org/toc/1932-6203Spot-the-difference, the popular childhood game and a prototypical change blindness task, involves identification of differences in local features of two otherwise identical scenes using an eye scanning and matching strategy. Through binocular fusion of the companion scenes, the game becomes a visual search task, wherein players can simply scan the cyclopean percept for local features that may distinctly stand-out due to binocular rivalry/lustre. Here, we had a total of 100 visually normal adult (18-28 years of age) volunteers play this game in the traditional non-fusion mode and after cross-fusion of the companion images using a hand-held mirror stereoscope. The results demonstrate that the fusion mode significantly speeds up gameplay and reduces errors, relative to the non-fusion mode, for a range of target sizes, contrasts, and chromaticity tested (all, p<0.001). Amongst the three types of local feature differences available in these images (polarity difference, presence/absence of a local feature difference and shape difference in a local feature difference), features containing polarity difference was identified as first in ~60-70% of instances in both modes of gameplay (p<0.01), with this proportion being larger in the fusion than in the non-fusion mode. The binocular fusion advantage is lost when the lustre cue is purposefully weakened through alterations in target luminance polarity. The spot-the-difference game may thus be cheated using binocular fusion and the differences readily identified through a vivid experience of binocular rivalry/lustre.Kavitha VenkataramananSwanandi GawdeAmithavikram R HathibelagalShrikant R BharadwajPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 7, p e0254715 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kavitha Venkataramanan Swanandi Gawde Amithavikram R Hathibelagal Shrikant R Bharadwaj Binocular fusion enhances the efficiency of spot-the-difference gameplay.
description	Spot-the-difference, the popular childhood game and a prototypical change blindness task, involves identification of differences in local features of two otherwise identical scenes using an eye scanning and matching strategy. Through binocular fusion of the companion scenes, the game becomes a visual search task, wherein players can simply scan the cyclopean percept for local features that may distinctly stand-out due to binocular rivalry/lustre. Here, we had a total of 100 visually normal adult (18-28 years of age) volunteers play this game in the traditional non-fusion mode and after cross-fusion of the companion images using a hand-held mirror stereoscope. The results demonstrate that the fusion mode significantly speeds up gameplay and reduces errors, relative to the non-fusion mode, for a range of target sizes, contrasts, and chromaticity tested (all, p<0.001). Amongst the three types of local feature differences available in these images (polarity difference, presence/absence of a local feature difference and shape difference in a local feature difference), features containing polarity difference was identified as first in ~60-70% of instances in both modes of gameplay (p<0.01), with this proportion being larger in the fusion than in the non-fusion mode. The binocular fusion advantage is lost when the lustre cue is purposefully weakened through alterations in target luminance polarity. The spot-the-difference game may thus be cheated using binocular fusion and the differences readily identified through a vivid experience of binocular rivalry/lustre.
format	article
author	Kavitha Venkataramanan Swanandi Gawde Amithavikram R Hathibelagal Shrikant R Bharadwaj
author_facet	Kavitha Venkataramanan Swanandi Gawde Amithavikram R Hathibelagal Shrikant R Bharadwaj
author_sort	Kavitha Venkataramanan
title	Binocular fusion enhances the efficiency of spot-the-difference gameplay.
title_short	Binocular fusion enhances the efficiency of spot-the-difference gameplay.
title_full	Binocular fusion enhances the efficiency of spot-the-difference gameplay.
title_fullStr	Binocular fusion enhances the efficiency of spot-the-difference gameplay.
title_full_unstemmed	Binocular fusion enhances the efficiency of spot-the-difference gameplay.
title_sort	binocular fusion enhances the efficiency of spot-the-difference gameplay.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/6b4501d4f81e4d6e9f7dec33a38ddc6c
work_keys_str_mv	AT kavithavenkataramanan binocularfusionenhancestheefficiencyofspotthedifferencegameplay AT swanandigawde binocularfusionenhancestheefficiencyofspotthedifferencegameplay AT amithavikramrhathibelagal binocularfusionenhancestheefficiencyofspotthedifferencegameplay AT shrikantrbharadwaj binocularfusionenhancestheefficiencyofspotthedifferencegameplay
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Binocular fusion enhances the efficiency of spot-the-difference gameplay.

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