The Mechanical Representation of Temporal Delays

Abstract When we knock on a door, we perceive the impact as a collection of simultaneous events, combining sound, sight, and tactile sensation. In reality, information from different modalities but from a single source is flowing inside the brain along different pathways, reaching processing centers...

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Autores principales:	Raz Leib, Amir Karniel, Ferdinando A. Mussa-Ivaldi
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/6bfab0bfc97140ee913526509ad8974b
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id	oai:doaj.org-article:6bfab0bfc97140ee913526509ad8974b
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spelling	oai:doaj.org-article:6bfab0bfc97140ee913526509ad8974b2021-12-02T12:32:06ZThe Mechanical Representation of Temporal Delays10.1038/s41598-017-07289-32045-2322https://doaj.org/article/6bfab0bfc97140ee913526509ad8974b2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07289-3https://doaj.org/toc/2045-2322Abstract When we knock on a door, we perceive the impact as a collection of simultaneous events, combining sound, sight, and tactile sensation. In reality, information from different modalities but from a single source is flowing inside the brain along different pathways, reaching processing centers at different times. Therefore, interpreting different sensory modalities which seem to occur simultaneously requires information processing that accounts for these different delays. As in a computer-based robotic system, does the brain use some explicit estimation of the time delay, to realign the sensory flows? Or does it compensate for temporal delays by representing them as changes in the body/environment mechanics? Using delayed-state or an approximation for delayed-state manipulations between visual and proprioceptive feedback during a tracking task, we show that tracking errors, grip forces, and learning curves are consistent with predictions of a representation that is based on approximation for delay, refuting an explicit delayed-state representation. Delayed-state representations are based on estimating the time elapsed between the movement commands and their observed consequences. In contrast, an approximation for delay representations result from estimating the instantaneous relation between the expected and observed motion variables, without explicit reference to time.Raz LeibAmir KarnielFerdinando A. Mussa-IvaldiNature 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 Raz Leib Amir Karniel Ferdinando A. Mussa-Ivaldi The Mechanical Representation of Temporal Delays
description	Abstract When we knock on a door, we perceive the impact as a collection of simultaneous events, combining sound, sight, and tactile sensation. In reality, information from different modalities but from a single source is flowing inside the brain along different pathways, reaching processing centers at different times. Therefore, interpreting different sensory modalities which seem to occur simultaneously requires information processing that accounts for these different delays. As in a computer-based robotic system, does the brain use some explicit estimation of the time delay, to realign the sensory flows? Or does it compensate for temporal delays by representing them as changes in the body/environment mechanics? Using delayed-state or an approximation for delayed-state manipulations between visual and proprioceptive feedback during a tracking task, we show that tracking errors, grip forces, and learning curves are consistent with predictions of a representation that is based on approximation for delay, refuting an explicit delayed-state representation. Delayed-state representations are based on estimating the time elapsed between the movement commands and their observed consequences. In contrast, an approximation for delay representations result from estimating the instantaneous relation between the expected and observed motion variables, without explicit reference to time.
format	article
author	Raz Leib Amir Karniel Ferdinando A. Mussa-Ivaldi
author_facet	Raz Leib Amir Karniel Ferdinando A. Mussa-Ivaldi
author_sort	Raz Leib
title	The Mechanical Representation of Temporal Delays
title_short	The Mechanical Representation of Temporal Delays
title_full	The Mechanical Representation of Temporal Delays
title_fullStr	The Mechanical Representation of Temporal Delays
title_full_unstemmed	The Mechanical Representation of Temporal Delays
title_sort	mechanical representation of temporal delays
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/6bfab0bfc97140ee913526509ad8974b
work_keys_str_mv	AT razleib themechanicalrepresentationoftemporaldelays AT amirkarniel themechanicalrepresentationoftemporaldelays AT ferdinandoamussaivaldi themechanicalrepresentationoftemporaldelays AT razleib mechanicalrepresentationoftemporaldelays AT amirkarniel mechanicalrepresentationoftemporaldelays AT ferdinandoamussaivaldi mechanicalrepresentationoftemporaldelays
_version_	1718394163231195136

The Mechanical Representation of Temporal Delays

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