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Mental calculation increases physiological postural tremor, but does not influence physiological goal-directed kinetic tremor
PURPOSE: During a cognitive effort, an increase in cortical electrical activity, functional alterations in the anterior cingulate cortex, and modifications in cortical inputs to the active motor units have been reported. In light of this, an increase in tremor could be anticipated as result of a men...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9613750/ https://www.ncbi.nlm.nih.gov/pubmed/36121480 http://dx.doi.org/10.1007/s00421-022-05039-6 |
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author | Budini, Francesco Mocnik, Richard Tilp, Markus Crognale, Domenico |
author_facet | Budini, Francesco Mocnik, Richard Tilp, Markus Crognale, Domenico |
author_sort | Budini, Francesco |
collection | PubMed |
description | PURPOSE: During a cognitive effort, an increase in cortical electrical activity, functional alterations in the anterior cingulate cortex, and modifications in cortical inputs to the active motor units have been reported. In light of this, an increase in tremor could be anticipated as result of a mental task. In the present work, we tested this hypothesis. METHODS: In 25 individuals, tremor was measured with a three-axial accelerometer during 300 s of postural and goal-directed tasks performed simultaneously to mental calculation, or during control (same tasks without mental calculation). Hand and finger dexterity were also evaluated. Electromyographic (EMG) recordings from the extensor digitorum communis were collected during the postural task. RESULTS: Hand and finger dexterity was negatively affected by the mental task (p = .003 and p = .00005 respectively). During mental calculation, muscle tremor increased in the hand postural (+ 29%, p = .00005) but not in the goal-directed task (− 1.5%, p > .05). The amplitude of the main frequency peak also increased exclusively in the hand postural task (p = .028), whilst no shift in the position of the main frequency peak was observed. EMG was not affected. CONCLUSION: These results support the position of the contribution of a central component in the origin of physiological hand postural tremor. It is suggested that the different effect of mental calculation on hand postural and goal-directed tasks can be attributed to the different origins and characteristics of hand postural and goal-directed physiological tremor. |
format | Online Article Text |
id | pubmed-9613750 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-96137502022-10-29 Mental calculation increases physiological postural tremor, but does not influence physiological goal-directed kinetic tremor Budini, Francesco Mocnik, Richard Tilp, Markus Crognale, Domenico Eur J Appl Physiol Original Article PURPOSE: During a cognitive effort, an increase in cortical electrical activity, functional alterations in the anterior cingulate cortex, and modifications in cortical inputs to the active motor units have been reported. In light of this, an increase in tremor could be anticipated as result of a mental task. In the present work, we tested this hypothesis. METHODS: In 25 individuals, tremor was measured with a three-axial accelerometer during 300 s of postural and goal-directed tasks performed simultaneously to mental calculation, or during control (same tasks without mental calculation). Hand and finger dexterity were also evaluated. Electromyographic (EMG) recordings from the extensor digitorum communis were collected during the postural task. RESULTS: Hand and finger dexterity was negatively affected by the mental task (p = .003 and p = .00005 respectively). During mental calculation, muscle tremor increased in the hand postural (+ 29%, p = .00005) but not in the goal-directed task (− 1.5%, p > .05). The amplitude of the main frequency peak also increased exclusively in the hand postural task (p = .028), whilst no shift in the position of the main frequency peak was observed. EMG was not affected. CONCLUSION: These results support the position of the contribution of a central component in the origin of physiological hand postural tremor. It is suggested that the different effect of mental calculation on hand postural and goal-directed tasks can be attributed to the different origins and characteristics of hand postural and goal-directed physiological tremor. Springer Berlin Heidelberg 2022-09-19 2022 /pmc/articles/PMC9613750/ /pubmed/36121480 http://dx.doi.org/10.1007/s00421-022-05039-6 Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Original Article Budini, Francesco Mocnik, Richard Tilp, Markus Crognale, Domenico Mental calculation increases physiological postural tremor, but does not influence physiological goal-directed kinetic tremor |
title | Mental calculation increases physiological postural tremor, but does not influence physiological goal-directed kinetic tremor |
title_full | Mental calculation increases physiological postural tremor, but does not influence physiological goal-directed kinetic tremor |
title_fullStr | Mental calculation increases physiological postural tremor, but does not influence physiological goal-directed kinetic tremor |
title_full_unstemmed | Mental calculation increases physiological postural tremor, but does not influence physiological goal-directed kinetic tremor |
title_short | Mental calculation increases physiological postural tremor, but does not influence physiological goal-directed kinetic tremor |
title_sort | mental calculation increases physiological postural tremor, but does not influence physiological goal-directed kinetic tremor |
topic | Original Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9613750/ https://www.ncbi.nlm.nih.gov/pubmed/36121480 http://dx.doi.org/10.1007/s00421-022-05039-6 |
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