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dc.contributor.author
van den Berg, Femke E.
dc.contributor.author
Swinnen, Stephan P.
dc.contributor.author
Wenderoth, Nicole
dc.date.accessioned
2018-11-01T10:36:25Z
dc.date.available
2017-06-11T21:38:27Z
dc.date.available
2018-11-01T10:36:25Z
dc.date.issued
2011-03-09
dc.identifier.issn
1932-6203
dc.identifier.other
10.1371/journal.pone.0017742
en_US
dc.identifier.uri
http://hdl.handle.net/20.500.11850/107835
dc.identifier.doi
10.3929/ethz-b-000107835
dc.description.abstract
Unilateral movements are mainly controlled by the contralateral hemisphere, even though the primary motor cortex ipsilateral (M1ipsi) to the moving body side can undergo task-related changes of activity as well. Here we used transcranial magnetic stimulation (TMS) to investigate whether representations of the wrist flexor (FCR) and extensor (ECR) in M1ipsi would be modulated when unilateral rhythmical wrist movements were executed in isolation or in the context of a simple or difficult hand-foot coordination pattern, and whether this modulation would differ for the left versus right hemisphere. We found that M1ipsi facilitation of the resting ECR and FCR mirrored the activation of the moving wrist such that facilitation was higher when the homologous muscle was activated during the cyclical movement. We showed that this ipsilateral facilitation increased significantly when the wrist movements were performed in the context of demanding hand-foot coordination tasks whereas foot movements alone influenced the hand representation of M1ipsi only slightly. Our data revealed a clear hemispheric asymmetry such that MEP responses were significantly larger when elicited in the left M1ipsi than in the right. In experiment 2, we tested whether the modulations of M1ipsi facilitation, caused by performing different coordination tasks with the left versus right body sides, could be explained by changes in short intracortical inhibition (SICI). We found that SICI was increasingly reduced for a complex coordination pattern as compared to rest, but only in the right M1ipsi. We argue that our results might reflect the stronger involvement of the left versus right hemisphere in performing demanding motor tasks.
en_US
dc.format
application/pdf
en_US
dc.language.iso
en
en_US
dc.publisher
Public Library of Science
en_US
dc.rights.uri
http://creativecommons.org/licenses/by/3.0/
dc.title
Excitability of the motor cortex ipsilateral to the moving body side depends on spatio-temporal task complexity and hemispheric specialization
en_US
dc.type
Journal Article
dc.rights.license
Creative Commons Attribution 3.0 Unported
ethz.journal.title
PLoS ONE
ethz.journal.volume
6
en_US
ethz.journal.issue
3
en_US
ethz.journal.abbreviated
PLoS ONE
ethz.pages.start
e17742
en_US
ethz.size
10 p.
en_US
ethz.version.deposit
publishedVersion
en_US
ethz.identifier.nebis
006206116
ethz.publication.place
San Francisco, CA, USA
en_US
ethz.publication.status
published
en_US
ethz.leitzahl
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::02535 - Institut für Bewegungswiss. und Sport / Institut of Human Movement Sc. and Sport::03963 - Wenderoth, Nicole / Wenderoth, Nicole
en_US
ethz.leitzahl.certified
ETH Zürich::00002 - ETH Zürich::00012 - Lehre und Forschung::00007 - Departemente::02070 - Dep. Gesundheitswiss. und Technologie / Dep. of Health Sciences and Technology::02535 - Institut für Bewegungswiss. und Sport / Institut of Human Movement Sc. and Sport::03963 - Wenderoth, Nicole / Wenderoth, Nicole
ethz.date.deposited
2017-06-11T21:39:25Z
ethz.source
ECIT
ethz.identifier.importid
imp593653c3287ad62951
ethz.ecitpid
pub:168580
ethz.eth
no
en_US
ethz.availability
Open access
en_US
ethz.rosetta.installDate
2017-07-14T22:18:30Z
ethz.rosetta.lastUpdated
2018-11-01T10:36:29Z
ethz.rosetta.versionExported
true
ethz.COinS
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