Pupillometry in auditory multistability.

In multistability, a constant stimulus induces alternating perceptual interpretations. For many forms of visual multistability, the transition from one interpretation to another ("perceptual switch") is accompanied by a dilation of the pupil. Here we ask whether the same holds for auditory...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Jan Grenzebach, Thomas G G Wegner, Wolfgang Einhäuser, Alexandra Bendixen
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bfdfa48126664e8384515b75fdee4ea6
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:bfdfa48126664e8384515b75fdee4ea6
record_format	dspace
spelling	oai:doaj.org-article:bfdfa48126664e8384515b75fdee4ea62021-11-25T06:23:35ZPupillometry in auditory multistability.1932-620310.1371/journal.pone.0252370https://doaj.org/article/bfdfa48126664e8384515b75fdee4ea62021-01-01T00:00:00Zhttps://doi.org/10.1371/journal.pone.0252370https://doaj.org/toc/1932-6203In multistability, a constant stimulus induces alternating perceptual interpretations. For many forms of visual multistability, the transition from one interpretation to another ("perceptual switch") is accompanied by a dilation of the pupil. Here we ask whether the same holds for auditory multistability, specifically auditory streaming. Two tones were played in alternation, yielding four distinct interpretations: the tones can be perceived as one integrated percept (single sound source), or as segregated with either tone or both tones in the foreground. We found that the pupil dilates significantly around the time a perceptual switch is reported ("multistable condition"). When participants instead responded to actual stimulus changes that closely mimicked the multistable perceptual experience ("replay condition"), the pupil dilated more around such responses than in multistability. This still held when data were corrected for the pupil response to the stimulus change as such. Hence, active responses to an exogeneous stimulus change trigger a stronger or temporally more confined pupil dilation than responses to an endogenous perceptual switch. In another condition, participants randomly pressed the buttons used for reporting multistability. In Study 1, this "random condition" failed to sufficiently mimic the temporal pattern of multistability. By adapting the instructions, in Study 2 we obtained a response pattern more similar to the multistable condition. In this case, the pupil dilated significantly around the random button presses. Albeit numerically smaller, this pupil response was not significantly different from the multistable condition. While there are several possible explanations-related, e.g., to the decision to respond-this underlines the difficulty to isolate a purely perceptual effect in multistability. Our data extend previous findings from visual to auditory multistability. They highlight methodological challenges in interpreting such data and suggest possible approaches to meet them, including a novel stimulus to simulate the experience of perceptual switches in auditory streaming.Jan GrenzebachThomas G G WegnerWolfgang EinhäuserAlexandra BendixenPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 16, Iss 6, p e0252370 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Jan Grenzebach Thomas G G Wegner Wolfgang Einhäuser Alexandra Bendixen Pupillometry in auditory multistability.
description	In multistability, a constant stimulus induces alternating perceptual interpretations. For many forms of visual multistability, the transition from one interpretation to another ("perceptual switch") is accompanied by a dilation of the pupil. Here we ask whether the same holds for auditory multistability, specifically auditory streaming. Two tones were played in alternation, yielding four distinct interpretations: the tones can be perceived as one integrated percept (single sound source), or as segregated with either tone or both tones in the foreground. We found that the pupil dilates significantly around the time a perceptual switch is reported ("multistable condition"). When participants instead responded to actual stimulus changes that closely mimicked the multistable perceptual experience ("replay condition"), the pupil dilated more around such responses than in multistability. This still held when data were corrected for the pupil response to the stimulus change as such. Hence, active responses to an exogeneous stimulus change trigger a stronger or temporally more confined pupil dilation than responses to an endogenous perceptual switch. In another condition, participants randomly pressed the buttons used for reporting multistability. In Study 1, this "random condition" failed to sufficiently mimic the temporal pattern of multistability. By adapting the instructions, in Study 2 we obtained a response pattern more similar to the multistable condition. In this case, the pupil dilated significantly around the random button presses. Albeit numerically smaller, this pupil response was not significantly different from the multistable condition. While there are several possible explanations-related, e.g., to the decision to respond-this underlines the difficulty to isolate a purely perceptual effect in multistability. Our data extend previous findings from visual to auditory multistability. They highlight methodological challenges in interpreting such data and suggest possible approaches to meet them, including a novel stimulus to simulate the experience of perceptual switches in auditory streaming.
format	article
author	Jan Grenzebach Thomas G G Wegner Wolfgang Einhäuser Alexandra Bendixen
author_facet	Jan Grenzebach Thomas G G Wegner Wolfgang Einhäuser Alexandra Bendixen
author_sort	Jan Grenzebach
title	Pupillometry in auditory multistability.
title_short	Pupillometry in auditory multistability.
title_full	Pupillometry in auditory multistability.
title_fullStr	Pupillometry in auditory multistability.
title_full_unstemmed	Pupillometry in auditory multistability.
title_sort	pupillometry in auditory multistability.
publisher	Public Library of Science (PLoS)
publishDate	2021
url	https://doaj.org/article/bfdfa48126664e8384515b75fdee4ea6
work_keys_str_mv	AT jangrenzebach pupillometryinauditorymultistability AT thomasggwegner pupillometryinauditorymultistability AT wolfgangeinhauser pupillometryinauditorymultistability AT alexandrabendixen pupillometryinauditorymultistability
_version_	1718413824641466368

Pupillometry in auditory multistability.

Ejemplares similares