Motion-induced compression of perceived numerosity

Abstract It has been recently proposed that space, time, and number might share a common representation in the brain. Evidence supporting this idea comes from adaptation studies demonstrating that prolonged exposure to a given stimulus feature distorts the perception of different characteristics. Fo...

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Autores principales:	Michele Fornaciai, Irene Togoli, Roberto Arrighi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2018
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/8d66612b39a44c5eb2491a96731dd1d0
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spelling	oai:doaj.org-article:8d66612b39a44c5eb2491a96731dd1d02021-12-02T15:08:45ZMotion-induced compression of perceived numerosity10.1038/s41598-018-25244-82045-2322https://doaj.org/article/8d66612b39a44c5eb2491a96731dd1d02018-05-01T00:00:00Zhttps://doi.org/10.1038/s41598-018-25244-8https://doaj.org/toc/2045-2322Abstract It has been recently proposed that space, time, and number might share a common representation in the brain. Evidence supporting this idea comes from adaptation studies demonstrating that prolonged exposure to a given stimulus feature distorts the perception of different characteristics. For example, visual motion adaptation affects both perceived position and duration of subsequent stimuli presented in the adapted location. Here, we tested whether motion adaptation also affects perceived numerosity, by testing the effect of adaptation to translating or rotating stimuli moving either at high (20 Hz) or low (5 Hz) speed. Adaptation to fast translational motion yielded a robust reduction in the apparent numerosity of the adapted stimulus (~25%) while adaptation to slow translational or circular motion (either 20 Hz or 5 Hz) yielded a weaker but still significant compression. Control experiments suggested that none of these results could be accounted for in terms of stimulus masking. Taken together, our results are consistent with the extant literature supporting the idea of a generalized magnitude system underlying the representation of numerosity, space and time via common metrics. However, as changes in perceived numerosity co-varied with both adapting motion profile and speed, our evidence also suggests complex and asymmetric interactions between different magnitude representations.Michele FornaciaiIrene TogoliRoberto ArrighiNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 8, Iss 1, Pp 1-11 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Michele Fornaciai Irene Togoli Roberto Arrighi Motion-induced compression of perceived numerosity
description	Abstract It has been recently proposed that space, time, and number might share a common representation in the brain. Evidence supporting this idea comes from adaptation studies demonstrating that prolonged exposure to a given stimulus feature distorts the perception of different characteristics. For example, visual motion adaptation affects both perceived position and duration of subsequent stimuli presented in the adapted location. Here, we tested whether motion adaptation also affects perceived numerosity, by testing the effect of adaptation to translating or rotating stimuli moving either at high (20 Hz) or low (5 Hz) speed. Adaptation to fast translational motion yielded a robust reduction in the apparent numerosity of the adapted stimulus (~25%) while adaptation to slow translational or circular motion (either 20 Hz or 5 Hz) yielded a weaker but still significant compression. Control experiments suggested that none of these results could be accounted for in terms of stimulus masking. Taken together, our results are consistent with the extant literature supporting the idea of a generalized magnitude system underlying the representation of numerosity, space and time via common metrics. However, as changes in perceived numerosity co-varied with both adapting motion profile and speed, our evidence also suggests complex and asymmetric interactions between different magnitude representations.
format	article
author	Michele Fornaciai Irene Togoli Roberto Arrighi
author_facet	Michele Fornaciai Irene Togoli Roberto Arrighi
author_sort	Michele Fornaciai
title	Motion-induced compression of perceived numerosity
title_short	Motion-induced compression of perceived numerosity
title_full	Motion-induced compression of perceived numerosity
title_fullStr	Motion-induced compression of perceived numerosity
title_full_unstemmed	Motion-induced compression of perceived numerosity
title_sort	motion-induced compression of perceived numerosity
publisher	Nature Portfolio
publishDate	2018
url	https://doaj.org/article/8d66612b39a44c5eb2491a96731dd1d0
work_keys_str_mv	AT michelefornaciai motioninducedcompressionofperceivednumerosity AT irenetogoli motioninducedcompressionofperceivednumerosity AT robertoarrighi motioninducedcompressionofperceivednumerosity
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Motion-induced compression of perceived numerosity

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