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  Improving motor performance without training: The effect of combining mirror visual feedback with transcranial direct current stimulation

von Rein, E., Hoff, M., Kaminski, E., Sehm, B., Steele, C., Villringer, A., et al. (2015). Improving motor performance without training: The effect of combining mirror visual feedback with transcranial direct current stimulation. Journal of Neurophysiology, 113(7), 2383-2389. doi:10.1152/jn.00832.2014.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0026-C593-7 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-7A70-6
Genre: Journal Article

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 Creators:
von Rein, Erik1, Author
Hoff, Maike1, Author
Kaminski, Elisabeth1, Author              
Sehm, Bernhard1, Author              
Steele, Christopher1, Author              
Villringer, Arno1, 2, Author              
Ragert, Patrick1, Author              
Affiliations:
1Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
2Berlin School of Mind and Brain, Humboldt University Berlin, Germany, ou_persistent22              

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Free keywords: Transcranial direct current stimulation (tDCS); Motor learning; Mirror visual feedback; Primary motor cortex
 Abstract: Mirror visual feedback (MVF) during motor training has been shown to improve motor performance of the untrained hand. Here we thought to determine if MVF-induced performance improvements of the left hand can be augmented by upregulating plasticity in right primary motor cortex (M1) by means of anodal transcranial direct current stimulation (a-tDCS) while subjects trained with the right hand. Participants performed a ball-rotation task with either their left (untrained) or right (trained) hand on two consecutive days (days 1 and 2). During training with the right hand, MVF was provided concurrent with two tDCS conditions: group 1 received a-tDCS over right M1 (n = 10), whereas group 2 received sham tDCS (s-tDCS, n = 10). On day 2, performance was reevaluated under the same experimental conditions compared with day 1 but without tDCS. While baseline performance of the left hand (day 1) was not different between groups, a-tDCS exhibited stronger MVF-induced performance improvements compared with s-tDCS. Similar results were observed for day 2 (without tDCS application). A control experiment (n = 8) with a-tDCS over right M1 as outlined above but without MVF revealed that left hand improvement was significantly less pronounced than that induced by combined a-tDCS and MVF. Based on these results, we provide novel evidence that upregulating activity in the untrained M1 by means of a-tDCS is capable of augmenting MVF-induced performance improvements in young normal volunteers. Our findings suggest that concurrent MVF and tDCS might have synergistic and additive effects on motor performance of the untrained hand, a result of relevance for clinical approaches in neurorehabilitation and/or exercise science.

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Language(s): eng - English
 Dates: 2014-10-202015-01-202015-01-282015-04-01
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1152/jn.00832.2014
PMID: 25632079
PMC: PMC4416593
Other: Epub 2015
 Degree: -

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Title: Journal of Neurophysiology
  Other : J. Neurophysiol.
Source Genre: Journal
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Affiliations:
Publ. Info: Bethesda, MD : The Society
Pages: - Volume / Issue: 113 (7) Sequence Number: - Start / End Page: 2383 - 2389 Identifier: ISSN: 0022-3077
CoNE: https://pure.mpg.de/cone/journals/resource/954925416959