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Contributions of the Left and the Right Hemispheres on Language-Induced Grip Force Modulation of the Left Hand in Unimanual Tasks

Background and Objectives: Language-induced grip force modulation (LGFM) can be used to better understand the link between language and motor functions as an expression of embodied language. However, the contribution of each brain hemisphere to LGFM is still unclear. Using six different action verbs...

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Autores principales: da Silva, Ronaldo Luis, Santos, Francielly Ferreira, Mendes, Isabella Maria Gonçalves, Caromano, Fátima Aparecida, Higgins, Johanne, Frak, Victor
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6843471/
https://www.ncbi.nlm.nih.gov/pubmed/31590447
http://dx.doi.org/10.3390/medicina55100674
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author da Silva, Ronaldo Luis
Santos, Francielly Ferreira
Mendes, Isabella Maria Gonçalves
Caromano, Fátima Aparecida
Higgins, Johanne
Frak, Victor
author_facet da Silva, Ronaldo Luis
Santos, Francielly Ferreira
Mendes, Isabella Maria Gonçalves
Caromano, Fátima Aparecida
Higgins, Johanne
Frak, Victor
author_sort da Silva, Ronaldo Luis
collection PubMed
description Background and Objectives: Language-induced grip force modulation (LGFM) can be used to better understand the link between language and motor functions as an expression of embodied language. However, the contribution of each brain hemisphere to LGFM is still unclear. Using six different action verbs as stimuli, this study evaluated the grip force modulation of the left hand in a unimanual task to characterize the left and right hemispheres’ contributions. Materials and Methods: Left-hand LGFM of 20 healthy and consistently right-handed subjects was evaluated using the verbs “to write”, “to hold”, “to pull” (left-lateralized central processing actions), “to draw”, “to tie”, and “to drive” (bihemispheric central processing actions) as linguistic stimuli. The time between the word onset and the first interval of statistical significance regarding the baseline (here as reaction time, RT) was also measured. Results: The six verbs produced LGFM. The modulation intensity was similar for the six verbs, but the RT was variable. The verbs “to draw”, “to tie”, and “to drive”, whose central processing of the described action is bihemispheric, showed a longer RT compared to the other verbs. Conclusions: The possibility of a given manual action being performed by the left hand in consistent right-handers does not interfere with the occurrence of LGFM when the descriptor verb of this action is used as a linguistic stimulus, even if the possibility is remote. Therefore, LGFM seems to mainly rely on the left hemisphere, while a greater activation of the right hemisphere in action processing appears to slow the increase in LGFM intensity.
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spelling pubmed-68434712019-11-25 Contributions of the Left and the Right Hemispheres on Language-Induced Grip Force Modulation of the Left Hand in Unimanual Tasks da Silva, Ronaldo Luis Santos, Francielly Ferreira Mendes, Isabella Maria Gonçalves Caromano, Fátima Aparecida Higgins, Johanne Frak, Victor Medicina (Kaunas) Article Background and Objectives: Language-induced grip force modulation (LGFM) can be used to better understand the link between language and motor functions as an expression of embodied language. However, the contribution of each brain hemisphere to LGFM is still unclear. Using six different action verbs as stimuli, this study evaluated the grip force modulation of the left hand in a unimanual task to characterize the left and right hemispheres’ contributions. Materials and Methods: Left-hand LGFM of 20 healthy and consistently right-handed subjects was evaluated using the verbs “to write”, “to hold”, “to pull” (left-lateralized central processing actions), “to draw”, “to tie”, and “to drive” (bihemispheric central processing actions) as linguistic stimuli. The time between the word onset and the first interval of statistical significance regarding the baseline (here as reaction time, RT) was also measured. Results: The six verbs produced LGFM. The modulation intensity was similar for the six verbs, but the RT was variable. The verbs “to draw”, “to tie”, and “to drive”, whose central processing of the described action is bihemispheric, showed a longer RT compared to the other verbs. Conclusions: The possibility of a given manual action being performed by the left hand in consistent right-handers does not interfere with the occurrence of LGFM when the descriptor verb of this action is used as a linguistic stimulus, even if the possibility is remote. Therefore, LGFM seems to mainly rely on the left hemisphere, while a greater activation of the right hemisphere in action processing appears to slow the increase in LGFM intensity. MDPI 2019-10-06 /pmc/articles/PMC6843471/ /pubmed/31590447 http://dx.doi.org/10.3390/medicina55100674 Text en © 2019 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
da Silva, Ronaldo Luis
Santos, Francielly Ferreira
Mendes, Isabella Maria Gonçalves
Caromano, Fátima Aparecida
Higgins, Johanne
Frak, Victor
Contributions of the Left and the Right Hemispheres on Language-Induced Grip Force Modulation of the Left Hand in Unimanual Tasks
title Contributions of the Left and the Right Hemispheres on Language-Induced Grip Force Modulation of the Left Hand in Unimanual Tasks
title_full Contributions of the Left and the Right Hemispheres on Language-Induced Grip Force Modulation of the Left Hand in Unimanual Tasks
title_fullStr Contributions of the Left and the Right Hemispheres on Language-Induced Grip Force Modulation of the Left Hand in Unimanual Tasks
title_full_unstemmed Contributions of the Left and the Right Hemispheres on Language-Induced Grip Force Modulation of the Left Hand in Unimanual Tasks
title_short Contributions of the Left and the Right Hemispheres on Language-Induced Grip Force Modulation of the Left Hand in Unimanual Tasks
title_sort contributions of the left and the right hemispheres on language-induced grip force modulation of the left hand in unimanual tasks
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6843471/
https://www.ncbi.nlm.nih.gov/pubmed/31590447
http://dx.doi.org/10.3390/medicina55100674
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