Semantic and spatial congruency mould audiovisual integration depending on perceptual awareness

Abstract Information integration is considered a hallmark of human consciousness. Recent research has challenged this tenet by showing multisensory interactions in the absence of awareness. This psychophysics study assessed the impact of spatial and semantic correspondences on audiovisual binding in...

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Autores principales:	Patrycja Delong, Uta Noppeney
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/634ebc7f3bba4780b7f0add7429f6497
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id	oai:doaj.org-article:634ebc7f3bba4780b7f0add7429f6497
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spelling	oai:doaj.org-article:634ebc7f3bba4780b7f0add7429f64972021-12-02T15:49:53ZSemantic and spatial congruency mould audiovisual integration depending on perceptual awareness10.1038/s41598-021-90183-w2045-2322https://doaj.org/article/634ebc7f3bba4780b7f0add7429f64972021-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-90183-whttps://doaj.org/toc/2045-2322Abstract Information integration is considered a hallmark of human consciousness. Recent research has challenged this tenet by showing multisensory interactions in the absence of awareness. This psychophysics study assessed the impact of spatial and semantic correspondences on audiovisual binding in the presence and absence of visual awareness by combining forward–backward masking with spatial ventriloquism. Observers were presented with object pictures and synchronous sounds that were spatially and/or semantically congruent or incongruent. On each trial observers located the sound, identified the picture and rated the picture’s visibility. We observed a robust ventriloquist effect for subjectively visible and invisible pictures indicating that pictures that evade our perceptual awareness influence where we perceive sounds. Critically, semantic congruency enhanced these visual biases on perceived sound location only when the picture entered observers’ awareness. Our results demonstrate that crossmodal influences operating from vision to audition and vice versa are interactively controlled by spatial and semantic congruency in the presence of awareness. However, when visual processing is disrupted by masking procedures audiovisual interactions no longer depend on semantic correspondences.Patrycja DelongUta NoppeneyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Patrycja Delong Uta Noppeney Semantic and spatial congruency mould audiovisual integration depending on perceptual awareness
description	Abstract Information integration is considered a hallmark of human consciousness. Recent research has challenged this tenet by showing multisensory interactions in the absence of awareness. This psychophysics study assessed the impact of spatial and semantic correspondences on audiovisual binding in the presence and absence of visual awareness by combining forward–backward masking with spatial ventriloquism. Observers were presented with object pictures and synchronous sounds that were spatially and/or semantically congruent or incongruent. On each trial observers located the sound, identified the picture and rated the picture’s visibility. We observed a robust ventriloquist effect for subjectively visible and invisible pictures indicating that pictures that evade our perceptual awareness influence where we perceive sounds. Critically, semantic congruency enhanced these visual biases on perceived sound location only when the picture entered observers’ awareness. Our results demonstrate that crossmodal influences operating from vision to audition and vice versa are interactively controlled by spatial and semantic congruency in the presence of awareness. However, when visual processing is disrupted by masking procedures audiovisual interactions no longer depend on semantic correspondences.
format	article
author	Patrycja Delong Uta Noppeney
author_facet	Patrycja Delong Uta Noppeney
author_sort	Patrycja Delong
title	Semantic and spatial congruency mould audiovisual integration depending on perceptual awareness
title_short	Semantic and spatial congruency mould audiovisual integration depending on perceptual awareness
title_full	Semantic and spatial congruency mould audiovisual integration depending on perceptual awareness
title_fullStr	Semantic and spatial congruency mould audiovisual integration depending on perceptual awareness
title_full_unstemmed	Semantic and spatial congruency mould audiovisual integration depending on perceptual awareness
title_sort	semantic and spatial congruency mould audiovisual integration depending on perceptual awareness
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/634ebc7f3bba4780b7f0add7429f6497
work_keys_str_mv	AT patrycjadelong semanticandspatialcongruencymouldaudiovisualintegrationdependingonperceptualawareness AT utanoppeney semanticandspatialcongruencymouldaudiovisualintegrationdependingonperceptualawareness
_version_	1718385693482287104

Semantic and spatial congruency mould audiovisual integration depending on perceptual awareness

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