Virtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness

Abstract Neuroscientific and clinical studies on auditory perception often use headphones to limit sound interference. In these conditions, sounds are perceived as internalized because they lack the sound-attributes that normally occur with a sound produced from a point in space around the listener....

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Autores principales:	Lizette Heine, Alexandra Corneyllie, Florent Gobert, Jacques Luauté, Mathieu Lavandier, Fabien Perrin
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/e0ddd5e5e90b47b4946575a4168bf23f
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spelling	oai:doaj.org-article:e0ddd5e5e90b47b4946575a4168bf23f2021-12-02T18:18:33ZVirtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness10.1038/s41598-021-93151-62045-2322https://doaj.org/article/e0ddd5e5e90b47b4946575a4168bf23f2021-07-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-93151-6https://doaj.org/toc/2045-2322Abstract Neuroscientific and clinical studies on auditory perception often use headphones to limit sound interference. In these conditions, sounds are perceived as internalized because they lack the sound-attributes that normally occur with a sound produced from a point in space around the listener. Without the spatial attention mechanisms that occur with localized sounds, auditory functional assessments could thus be underestimated. We hypothesize that adding virtually externalization and localization cues to sounds through headphones enhance sound discrimination in both healthy participants and patients with a disorder of consciousness (DOC). Hd-EEG was analyzed in 14 healthy participants and 18 patients while they listened to self-relevant and irrelevant stimuli in two forms: diotic (classic sound presentation with an “internalized” feeling) and convolved with a binaural room impulse response (to create an “externalized” feeling). Convolution enhanced the brains’ discriminative response as well as the processing of irrelevant sounds itself, in both healthy participants and DOC patients. For the healthy participants, these effects could be associated with enhanced activation of both the dorsal (where/how) and ventral (what) auditory streams, suggesting that spatial attributes support speech discrimination. Thus, virtually spatialized sounds might “call attention to the outside world” and improve the sensitivity of assessment of brain function in DOC patients.Lizette HeineAlexandra CorneyllieFlorent GobertJacques LuautéMathieu LavandierFabien PerrinNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Lizette Heine Alexandra Corneyllie Florent Gobert Jacques Luauté Mathieu Lavandier Fabien Perrin Virtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness
description	Abstract Neuroscientific and clinical studies on auditory perception often use headphones to limit sound interference. In these conditions, sounds are perceived as internalized because they lack the sound-attributes that normally occur with a sound produced from a point in space around the listener. Without the spatial attention mechanisms that occur with localized sounds, auditory functional assessments could thus be underestimated. We hypothesize that adding virtually externalization and localization cues to sounds through headphones enhance sound discrimination in both healthy participants and patients with a disorder of consciousness (DOC). Hd-EEG was analyzed in 14 healthy participants and 18 patients while they listened to self-relevant and irrelevant stimuli in two forms: diotic (classic sound presentation with an “internalized” feeling) and convolved with a binaural room impulse response (to create an “externalized” feeling). Convolution enhanced the brains’ discriminative response as well as the processing of irrelevant sounds itself, in both healthy participants and DOC patients. For the healthy participants, these effects could be associated with enhanced activation of both the dorsal (where/how) and ventral (what) auditory streams, suggesting that spatial attributes support speech discrimination. Thus, virtually spatialized sounds might “call attention to the outside world” and improve the sensitivity of assessment of brain function in DOC patients.
format	article
author	Lizette Heine Alexandra Corneyllie Florent Gobert Jacques Luauté Mathieu Lavandier Fabien Perrin
author_facet	Lizette Heine Alexandra Corneyllie Florent Gobert Jacques Luauté Mathieu Lavandier Fabien Perrin
author_sort	Lizette Heine
title	Virtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness
title_short	Virtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness
title_full	Virtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness
title_fullStr	Virtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness
title_full_unstemmed	Virtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness
title_sort	virtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/e0ddd5e5e90b47b4946575a4168bf23f
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Virtually spatialized sounds enhance auditory processing in healthy participants and patients with a disorder of consciousness

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