The long developmental trajectory of body representation plasticity following tool use

Abstract Humans evolution is distinctly characterized by their exquisite mastery of tools, allowing them to shape their environment in more elaborate ways compared to other species. This ability is present ever since infancy and most theories indicate that children become proficient with tool use ve...

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Autores principales:	Marie Martel, Livio Finos, Eric Koun, Alessandro Farnè, Alice Catherine Roy
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/b659e41455744baeb8bbe214bf123e4f
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spelling	oai:doaj.org-article:b659e41455744baeb8bbe214bf123e4f2021-12-02T14:01:23ZThe long developmental trajectory of body representation plasticity following tool use10.1038/s41598-020-79476-82045-2322https://doaj.org/article/b659e41455744baeb8bbe214bf123e4f2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-79476-8https://doaj.org/toc/2045-2322Abstract Humans evolution is distinctly characterized by their exquisite mastery of tools, allowing them to shape their environment in more elaborate ways compared to other species. This ability is present ever since infancy and most theories indicate that children become proficient with tool use very early. In adults, tool use has been shown to plastically modify metric aspects of the arm representation, as indexed by changes in movement kinematics. To date, whether and when the plastic capability of updating the body representation develops during childhood remains unknown. This question is particularly important since body representation plasticity could be impacted by the fact that the human body takes years to achieve a stable metric configuration. Here we assessed the kinematics of 90 young participants (8–21 years old) required to reach for an object before and after tool use, as a function of their pubertal development. Results revealed that tool incorporation, as indexed by the adult typical kinematic pattern, develops very slowly and displays a u-shaped developmental trajectory. From early to mid puberty, the changes in kinematics following tool use seem to reflect a shortened arm representation, opposite to what was previously reported in adults. This pattern starts reversing after mid puberty, which is characterized by the lack of any kinematics change following tool use. The typical adult-like pattern emerges only at late puberty, when body size is stable. These findings reveal the complex dynamics of tool incorporation across development, possibly indexing the transition from a vision-based to a proprioception-based body representation plasticity.Marie MartelLivio FinosEric KounAlessandro FarnèAlice Catherine RoyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-15 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Marie Martel Livio Finos Eric Koun Alessandro Farnè Alice Catherine Roy The long developmental trajectory of body representation plasticity following tool use
description	Abstract Humans evolution is distinctly characterized by their exquisite mastery of tools, allowing them to shape their environment in more elaborate ways compared to other species. This ability is present ever since infancy and most theories indicate that children become proficient with tool use very early. In adults, tool use has been shown to plastically modify metric aspects of the arm representation, as indexed by changes in movement kinematics. To date, whether and when the plastic capability of updating the body representation develops during childhood remains unknown. This question is particularly important since body representation plasticity could be impacted by the fact that the human body takes years to achieve a stable metric configuration. Here we assessed the kinematics of 90 young participants (8–21 years old) required to reach for an object before and after tool use, as a function of their pubertal development. Results revealed that tool incorporation, as indexed by the adult typical kinematic pattern, develops very slowly and displays a u-shaped developmental trajectory. From early to mid puberty, the changes in kinematics following tool use seem to reflect a shortened arm representation, opposite to what was previously reported in adults. This pattern starts reversing after mid puberty, which is characterized by the lack of any kinematics change following tool use. The typical adult-like pattern emerges only at late puberty, when body size is stable. These findings reveal the complex dynamics of tool incorporation across development, possibly indexing the transition from a vision-based to a proprioception-based body representation plasticity.
format	article
author	Marie Martel Livio Finos Eric Koun Alessandro Farnè Alice Catherine Roy
author_facet	Marie Martel Livio Finos Eric Koun Alessandro Farnè Alice Catherine Roy
author_sort	Marie Martel
title	The long developmental trajectory of body representation plasticity following tool use
title_short	The long developmental trajectory of body representation plasticity following tool use
title_full	The long developmental trajectory of body representation plasticity following tool use
title_fullStr	The long developmental trajectory of body representation plasticity following tool use
title_full_unstemmed	The long developmental trajectory of body representation plasticity following tool use
title_sort	long developmental trajectory of body representation plasticity following tool use
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/b659e41455744baeb8bbe214bf123e4f
work_keys_str_mv	AT mariemartel thelongdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse AT liviofinos thelongdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse AT erickoun thelongdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse AT alessandrofarne thelongdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse AT alicecatherineroy thelongdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse AT mariemartel longdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse AT liviofinos longdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse AT erickoun longdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse AT alessandrofarne longdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse AT alicecatherineroy longdevelopmentaltrajectoryofbodyrepresentationplasticityfollowingtooluse
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The long developmental trajectory of body representation plasticity following tool use

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