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Mechanisms within the Parietal Cortex Correlate with the Benefits of Random Practice in Motor Adaptation

The motor learning literature shows an increased retest or transfer performance after practicing under unstable (random) conditions. This random practice effect (also known as contextual interference effect) is frequently investigated on the behavioral level and discussed in the context of mechanism...

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Autores principales: Thürer, Benjamin, Stockinger, Christian, Putze, Felix, Schultz, Tanja, Stein, Thorsten
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5539080/
https://www.ncbi.nlm.nih.gov/pubmed/28824406
http://dx.doi.org/10.3389/fnhum.2017.00403
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author Thürer, Benjamin
Stockinger, Christian
Putze, Felix
Schultz, Tanja
Stein, Thorsten
author_facet Thürer, Benjamin
Stockinger, Christian
Putze, Felix
Schultz, Tanja
Stein, Thorsten
author_sort Thürer, Benjamin
collection PubMed
description The motor learning literature shows an increased retest or transfer performance after practicing under unstable (random) conditions. This random practice effect (also known as contextual interference effect) is frequently investigated on the behavioral level and discussed in the context of mechanisms of the dorsolateral prefrontal cortex and increased cognitive efforts during movement planning. However, there is a lack of studies examining the random practice effect in motor adaptation tasks and, in general, the underlying neural processes of the random practice effect are not fully understood. We tested 24 right-handed human subjects performing a reaching task using a robotic manipulandum. Subjects learned to adapt either to a blocked or a random schedule of different force field perturbations while subjects’ electroencephalography (EEG) was recorded. The behavioral results showed a distinct random practice effect in terms of a more stabilized retest performance of the random compared to the blocked practicing group. Further analyses showed that this effect correlates with changes in the alpha band power in electrodes over parietal areas. We conclude that the random practice effect in this study is facilitated by mechanisms within the parietal cortex during movement execution which might reflect online feedback mechanisms.
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spelling pubmed-55390802017-08-18 Mechanisms within the Parietal Cortex Correlate with the Benefits of Random Practice in Motor Adaptation Thürer, Benjamin Stockinger, Christian Putze, Felix Schultz, Tanja Stein, Thorsten Front Hum Neurosci Neuroscience The motor learning literature shows an increased retest or transfer performance after practicing under unstable (random) conditions. This random practice effect (also known as contextual interference effect) is frequently investigated on the behavioral level and discussed in the context of mechanisms of the dorsolateral prefrontal cortex and increased cognitive efforts during movement planning. However, there is a lack of studies examining the random practice effect in motor adaptation tasks and, in general, the underlying neural processes of the random practice effect are not fully understood. We tested 24 right-handed human subjects performing a reaching task using a robotic manipulandum. Subjects learned to adapt either to a blocked or a random schedule of different force field perturbations while subjects’ electroencephalography (EEG) was recorded. The behavioral results showed a distinct random practice effect in terms of a more stabilized retest performance of the random compared to the blocked practicing group. Further analyses showed that this effect correlates with changes in the alpha band power in electrodes over parietal areas. We conclude that the random practice effect in this study is facilitated by mechanisms within the parietal cortex during movement execution which might reflect online feedback mechanisms. Frontiers Media S.A. 2017-08-02 /pmc/articles/PMC5539080/ /pubmed/28824406 http://dx.doi.org/10.3389/fnhum.2017.00403 Text en Copyright © 2017 Thürer, Stockinger, Putze, Schultz and Stein. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Neuroscience
Thürer, Benjamin
Stockinger, Christian
Putze, Felix
Schultz, Tanja
Stein, Thorsten
Mechanisms within the Parietal Cortex Correlate with the Benefits of Random Practice in Motor Adaptation
title Mechanisms within the Parietal Cortex Correlate with the Benefits of Random Practice in Motor Adaptation
title_full Mechanisms within the Parietal Cortex Correlate with the Benefits of Random Practice in Motor Adaptation
title_fullStr Mechanisms within the Parietal Cortex Correlate with the Benefits of Random Practice in Motor Adaptation
title_full_unstemmed Mechanisms within the Parietal Cortex Correlate with the Benefits of Random Practice in Motor Adaptation
title_short Mechanisms within the Parietal Cortex Correlate with the Benefits of Random Practice in Motor Adaptation
title_sort mechanisms within the parietal cortex correlate with the benefits of random practice in motor adaptation
topic Neuroscience
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5539080/
https://www.ncbi.nlm.nih.gov/pubmed/28824406
http://dx.doi.org/10.3389/fnhum.2017.00403
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