Pupil response hazard rates predict perceived gaze durations

Abstract We investigated the mechanisms for evaluating perceived gaze-shift duration. Timing relies on the accumulation of endogenous physiological signals. Here we focused on arousal, measured through pupil dilation, as a candidate timing signal. Participants timed gaze-shifts performed by face sti...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Nicola Binetti, Charlotte Harrison, Isabelle Mareschal, Alan Johnston
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/a246dd205a254f449c2aefe433aa66c6
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:a246dd205a254f449c2aefe433aa66c6
record_format	dspace
spelling	oai:doaj.org-article:a246dd205a254f449c2aefe433aa66c62021-12-02T16:06:13ZPupil response hazard rates predict perceived gaze durations10.1038/s41598-017-04249-92045-2322https://doaj.org/article/a246dd205a254f449c2aefe433aa66c62017-06-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-04249-9https://doaj.org/toc/2045-2322Abstract We investigated the mechanisms for evaluating perceived gaze-shift duration. Timing relies on the accumulation of endogenous physiological signals. Here we focused on arousal, measured through pupil dilation, as a candidate timing signal. Participants timed gaze-shifts performed by face stimuli in a Standard/Probe comparison task. Pupil responses were binned according to “Longer/Shorter” judgements in trials where Standard and Probe were identical. This ensured that pupil responses reflected endogenous arousal fluctuations opposed to differences in stimulus content. We found that pupil hazard rates predicted the classification of sub-second intervals (steeper dilation = “Longer” classifications). This shows that the accumulation of endogenous arousal signals informs gaze-shift timing judgements. We also found that participants relied exclusively on the 2nd stimulus to perform the classification, providing insights into timing strategies under conditions of maximum uncertainty. We observed no dissociation in pupil responses when timing equivalent neutral spatial displacements, indicating that a stimulus-dependent timer exploits arousal to time gaze-shifts.Nicola BinettiCharlotte HarrisonIsabelle MareschalAlan JohnstonNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-6 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nicola Binetti Charlotte Harrison Isabelle Mareschal Alan Johnston Pupil response hazard rates predict perceived gaze durations
description	Abstract We investigated the mechanisms for evaluating perceived gaze-shift duration. Timing relies on the accumulation of endogenous physiological signals. Here we focused on arousal, measured through pupil dilation, as a candidate timing signal. Participants timed gaze-shifts performed by face stimuli in a Standard/Probe comparison task. Pupil responses were binned according to “Longer/Shorter” judgements in trials where Standard and Probe were identical. This ensured that pupil responses reflected endogenous arousal fluctuations opposed to differences in stimulus content. We found that pupil hazard rates predicted the classification of sub-second intervals (steeper dilation = “Longer” classifications). This shows that the accumulation of endogenous arousal signals informs gaze-shift timing judgements. We also found that participants relied exclusively on the 2nd stimulus to perform the classification, providing insights into timing strategies under conditions of maximum uncertainty. We observed no dissociation in pupil responses when timing equivalent neutral spatial displacements, indicating that a stimulus-dependent timer exploits arousal to time gaze-shifts.
format	article
author	Nicola Binetti Charlotte Harrison Isabelle Mareschal Alan Johnston
author_facet	Nicola Binetti Charlotte Harrison Isabelle Mareschal Alan Johnston
author_sort	Nicola Binetti
title	Pupil response hazard rates predict perceived gaze durations
title_short	Pupil response hazard rates predict perceived gaze durations
title_full	Pupil response hazard rates predict perceived gaze durations
title_fullStr	Pupil response hazard rates predict perceived gaze durations
title_full_unstemmed	Pupil response hazard rates predict perceived gaze durations
title_sort	pupil response hazard rates predict perceived gaze durations
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/a246dd205a254f449c2aefe433aa66c6
work_keys_str_mv	AT nicolabinetti pupilresponsehazardratespredictperceivedgazedurations AT charlotteharrison pupilresponsehazardratespredictperceivedgazedurations AT isabellemareschal pupilresponsehazardratespredictperceivedgazedurations AT alanjohnston pupilresponsehazardratespredictperceivedgazedurations
_version_	1718385107253854208

Pupil response hazard rates predict perceived gaze durations

Ejemplares similares