A Bayesian Perspective on Accumulation in the Magnitude System

Abstract Several theoretical and empirical work posit the existence of a common magnitude system in the brain. Such a proposal implies that manipulating stimuli in one magnitude dimension (e.g. duration in time) should interfere with the subjective estimation of another magnitude dimension (e.g. siz...

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Autores principales:	Benoît Martin, Martin Wiener, Virginie van Wassenhove
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/779b153d884d4a73a4e7fc59d26a6eac
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id	oai:doaj.org-article:779b153d884d4a73a4e7fc59d26a6eac
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spelling	oai:doaj.org-article:779b153d884d4a73a4e7fc59d26a6eac2021-12-02T11:41:12ZA Bayesian Perspective on Accumulation in the Magnitude System10.1038/s41598-017-00680-02045-2322https://doaj.org/article/779b153d884d4a73a4e7fc59d26a6eac2017-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-00680-0https://doaj.org/toc/2045-2322Abstract Several theoretical and empirical work posit the existence of a common magnitude system in the brain. Such a proposal implies that manipulating stimuli in one magnitude dimension (e.g. duration in time) should interfere with the subjective estimation of another magnitude dimension (e.g. size in space). Here, we asked whether a generalized Bayesian magnitude estimation system would sample sensory evidence using a common, amodal prior. Two psychophysical experiments separately tested participants on their perception of duration, surface, and numerosity when the non-target magnitude dimensions and the rate of sensory evidence accumulation were manipulated. First, we found that duration estimation was resilient to changes in surface and numerosity, whereas lengthening (shortening) the duration yielded under- (over-) estimations of surface and numerosity. Second, the perception of surface and numerosity were affected by changes in the rate of sensory evidence accumulation, whereas duration was not. Our results suggest that a generalized magnitude system based on Bayesian computations would minimally necessitate multiple priors.Benoît MartinMartin WienerVirginie van WassenhoveNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-14 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Benoît Martin Martin Wiener Virginie van Wassenhove A Bayesian Perspective on Accumulation in the Magnitude System
description	Abstract Several theoretical and empirical work posit the existence of a common magnitude system in the brain. Such a proposal implies that manipulating stimuli in one magnitude dimension (e.g. duration in time) should interfere with the subjective estimation of another magnitude dimension (e.g. size in space). Here, we asked whether a generalized Bayesian magnitude estimation system would sample sensory evidence using a common, amodal prior. Two psychophysical experiments separately tested participants on their perception of duration, surface, and numerosity when the non-target magnitude dimensions and the rate of sensory evidence accumulation were manipulated. First, we found that duration estimation was resilient to changes in surface and numerosity, whereas lengthening (shortening) the duration yielded under- (over-) estimations of surface and numerosity. Second, the perception of surface and numerosity were affected by changes in the rate of sensory evidence accumulation, whereas duration was not. Our results suggest that a generalized magnitude system based on Bayesian computations would minimally necessitate multiple priors.
format	article
author	Benoît Martin Martin Wiener Virginie van Wassenhove
author_facet	Benoît Martin Martin Wiener Virginie van Wassenhove
author_sort	Benoît Martin
title	A Bayesian Perspective on Accumulation in the Magnitude System
title_short	A Bayesian Perspective on Accumulation in the Magnitude System
title_full	A Bayesian Perspective on Accumulation in the Magnitude System
title_fullStr	A Bayesian Perspective on Accumulation in the Magnitude System
title_full_unstemmed	A Bayesian Perspective on Accumulation in the Magnitude System
title_sort	bayesian perspective on accumulation in the magnitude system
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/779b153d884d4a73a4e7fc59d26a6eac
work_keys_str_mv	AT benoitmartin abayesianperspectiveonaccumulationinthemagnitudesystem AT martinwiener abayesianperspectiveonaccumulationinthemagnitudesystem AT virginievanwassenhove abayesianperspectiveonaccumulationinthemagnitudesystem AT benoitmartin bayesianperspectiveonaccumulationinthemagnitudesystem AT martinwiener bayesianperspectiveonaccumulationinthemagnitudesystem AT virginievanwassenhove bayesianperspectiveonaccumulationinthemagnitudesystem
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A Bayesian Perspective on Accumulation in the Magnitude System

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