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...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2017-04-01
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| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-017-00680-0 |
| _version_ | 1818428199827144704 |
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| author | Benoît Martin Martin Wiener Virginie van Wassenhove |
| author_facet | Benoît Martin Martin Wiener Virginie van Wassenhove |
| author_sort | Benoît Martin |
| collection | DOAJ |
| 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. |
| first_indexed | 2024-12-14T14:57:46Z |
| format | Article |
| id | doaj.art-779b153d884d4a73a4e7fc59d26a6eac |
| institution | Directory Open Access Journal |
| issn | 2045-2322 |
| language | English |
| last_indexed | 2024-12-14T14:57:46Z |
| publishDate | 2017-04-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj.art-779b153d884d4a73a4e7fc59d26a6eac2022-12-21T22:56:57ZengNature PortfolioScientific Reports2045-23222017-04-017111410.1038/s41598-017-00680-0A Bayesian Perspective on Accumulation in the Magnitude SystemBenoît Martin0Martin Wiener1Virginie van Wassenhove2CEA, DRF/I2BM, NeuroSpin, INSERM, U992, Cognitive Neuroimaging Unit, Université Paris-Sud, Université Paris-SaclayDepartment of Psychology, George Mason UniversityCEA, DRF/I2BM, NeuroSpin, INSERM, U992, Cognitive Neuroimaging Unit, Université Paris-Sud, Université Paris-SaclayAbstract 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.https://doi.org/10.1038/s41598-017-00680-0 |
| spellingShingle | Benoît Martin Martin Wiener Virginie van Wassenhove A Bayesian Perspective on Accumulation in the Magnitude System Scientific Reports |
| title | 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_short | A Bayesian Perspective on Accumulation in the Magnitude System |
| title_sort | bayesian perspective on accumulation in the magnitude system |
| url | https://doi.org/10.1038/s41598-017-00680-0 |
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