Conscious processing of auditory regularities induces a pupil dilation

Abstract Pupil dilation has been reliably identified as a physiological marker of consciously reportable mental effort. This classical finding raises the question of whether or not pupil dilation could be a specific somatic signature of conscious processing. In order to explore this possibility, we...

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Autores principales:	Marion Quirins, Clémence Marois, Mélanie Valente, Magali Seassau, Nicolas Weiss, Imen El Karoui, Jean-Rémy Hochmann, Lionel Naccache
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Pupil Dilation Effect Global Regularity Conscious Access Phonemic Version Consciously Reported Medicine R Science Q
Acceso en línea:	https://doaj.org/article/2fb904c186fb44e3a6ab36e7141f8476
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spelling	oai:doaj.org-article:2fb904c186fb44e3a6ab36e7141f84762021-12-02T11:41:12ZConscious processing of auditory regularities induces a pupil dilation10.1038/s41598-018-33202-72045-2322https://doaj.org/article/2fb904c186fb44e3a6ab36e7141f84762018-10-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-33202-7https://doaj.org/toc/2045-2322Abstract Pupil dilation has been reliably identified as a physiological marker of consciously reportable mental effort. This classical finding raises the question of whether or not pupil dilation could be a specific somatic signature of conscious processing. In order to explore this possibility, we engaged healthy volunteers in the ‘local global’ auditory paradigm we previously designed to disentangle conscious from non-conscious processing of novelty. We discovered that consciously reported violations of global (inter-trials) regularity were associated with a pupil dilation effect both in an active counting task and in a passive attentive task. This pupil dilation effect was detectable both at the group-level and at the individual level. In contrast, unreported violations of this global regularity, as well as unreported violations of local (intra-trial) regularity that do not require conscious access, were not associated with a pupil dilation effect. We replicated these findings in a phonemic version of the ‘local global’. Taken together these results strongly suggest that pupil dilation is a somatic marker of conscious access in the auditory modality, and that it could therefore be used to easily probe conscious processing at the individual level without interfering with participant’s stream of consciousness by questioning him/her.Marion QuirinsClémence MaroisMélanie ValenteMagali SeassauNicolas WeissImen El KarouiJean-Rémy HochmannLionel NaccacheNature PortfolioarticlePupil Dilation EffectGlobal RegularityConscious AccessPhonemic VersionConsciously ReportedMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Pupil Dilation Effect Global Regularity Conscious Access Phonemic Version Consciously Reported Medicine R Science Q
spellingShingle	Pupil Dilation Effect Global Regularity Conscious Access Phonemic Version Consciously Reported Medicine R Science Q Marion Quirins Clémence Marois Mélanie Valente Magali Seassau Nicolas Weiss Imen El Karoui Jean-Rémy Hochmann Lionel Naccache Conscious processing of auditory regularities induces a pupil dilation
description	Abstract Pupil dilation has been reliably identified as a physiological marker of consciously reportable mental effort. This classical finding raises the question of whether or not pupil dilation could be a specific somatic signature of conscious processing. In order to explore this possibility, we engaged healthy volunteers in the ‘local global’ auditory paradigm we previously designed to disentangle conscious from non-conscious processing of novelty. We discovered that consciously reported violations of global (inter-trials) regularity were associated with a pupil dilation effect both in an active counting task and in a passive attentive task. This pupil dilation effect was detectable both at the group-level and at the individual level. In contrast, unreported violations of this global regularity, as well as unreported violations of local (intra-trial) regularity that do not require conscious access, were not associated with a pupil dilation effect. We replicated these findings in a phonemic version of the ‘local global’. Taken together these results strongly suggest that pupil dilation is a somatic marker of conscious access in the auditory modality, and that it could therefore be used to easily probe conscious processing at the individual level without interfering with participant’s stream of consciousness by questioning him/her.
format	article
author	Marion Quirins Clémence Marois Mélanie Valente Magali Seassau Nicolas Weiss Imen El Karoui Jean-Rémy Hochmann Lionel Naccache
author_facet	Marion Quirins Clémence Marois Mélanie Valente Magali Seassau Nicolas Weiss Imen El Karoui Jean-Rémy Hochmann Lionel Naccache
author_sort	Marion Quirins
title	Conscious processing of auditory regularities induces a pupil dilation
title_short	Conscious processing of auditory regularities induces a pupil dilation
title_full	Conscious processing of auditory regularities induces a pupil dilation
title_fullStr	Conscious processing of auditory regularities induces a pupil dilation
title_full_unstemmed	Conscious processing of auditory regularities induces a pupil dilation
title_sort	conscious processing of auditory regularities induces a pupil dilation
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/2fb904c186fb44e3a6ab36e7141f8476
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Conscious processing of auditory regularities induces a pupil dilation

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