Cross-limb interference during motor learning
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Lauber, Benedikt
Department of Sport and Sport Science, University of Freiburg, Germany
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Lundbye-Jensen, Jesper
Department of Neuroscience and Pharmacology, University of Copenhagen, Denmark
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Keller, Martin
Department of Medicine, Movement and Sports Science, University of Fribourg, Switzerland
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Gollhofer, Albert
Department of Sport and Sport Science, University of Freiburg, Germany
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Taube, Wolfgang
Department of Medicine, Movement and Sports Science, University of Fribourg, Switzerland
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Leukel, Christian
Department of Sport and Sport Science, University of Freiburg, Germany
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Published in:
- PLoS ONE. - 2013, vol. 8, no. 12, p. e81038
English
It is well known that following skill learning, improvements in motor performance may transfer to the untrained contralateral limb. It is also well known that retention of a newly learned task A can be degraded when learning a competing task B that takes place directly after learning A. Here we investigate if this interference effect can also be observed in the limb contralateral to the trained one. Therefore, five different groups practiced a ballistic finger flexion task followed by an interfering visuomotor accuracy task with the same limb. Performance in the ballistic task was tested before the training, after the training and in an immediate retention test after the practice of the interference task for both the trained and the untrained hand. After training, subjects showed not only significant learning and interference effects for the trained limb but also for the contralateral untrained limb. Importantly, the interference effect in the untrained limb was dependent on the level of skill acquisition in the interfering motor task. These behavioural results of the untrained limb were accompanied by training specific changes in corticospinal excitability, which increased for the hemisphere ipsilateral to the trained hand following ballistic training and decreased during accuracy training of the ipsilateral hand. The results demonstrate that contralateral interference effects may occur, and that interference depends on the level of skill acquisition in the interfering motor task. This finding might be particularly relevant for rehabilitation.
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Faculty
- Faculté des sciences et de médecine
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Department
- Département de Médecine
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Language
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Classification
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Biological sciences
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License
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License undefined
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Identifiers
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Persistent URL
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https://folia.unifr.ch/unifr/documents/303342
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