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dc.contributor.authorKumpulainen, Susanne
dc.date.accessioned2010-05-03T11:39:28Z
dc.date.available2010-05-03T11:39:28Z
dc.date.issued2009
dc.identifier.otheroai:jykdok.linneanet.fi:1128825
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/23329
dc.description.abstractABSTRACT Kumpulainen, Susanne 2009. The effect of PAS and motor imagery on the excitability of the motor cortex. Department of Biology of Physical Activity, University of Jyväskylä. Master’s theses of biomechanics. 41 pages. The plasticity of the brain is an increasingly important topic for physical therapists interested in (re)learning and repair following injury. A number of potential endogenous and exogenous protocols have been developed with the improved understanding of the mechanisms of synaptic plasticity. The purpose of this study was twofold: First, the effect of motor imagery of plantarflexion on motor cortex excitability was investigated since it has been shown that motor imagery may result in the same types of plastic changes in the motor system as actual physical practise. The second aim was to study the effect of facilitatory paired associative stimulation (PAS) on motor imagery. PAS is an exogenous protocol which has been used to induce bidirectional changes in the motor cortex excitability. Transcranial megnetic stimulation was used to measure changes in the motor evoked potentials (MEPs) of the soleus muscle with, and without, motor imagery and before, immediately after, and 15 min after the PAS intervention. During motor imagery of plantar flexion, a remarkable increases in the amplitude of the MEP of the soleus were observed with each time points 76 ±62 %; 30 ±33 % and 31 ±50 %, respectively. The lack of background EMG assured that changes weren’t associated with muscle activity. Interestingly, instead of facilitatory PAS, the protocol induced a remarkable inhibitory PAS. Inhibition was bigger with the motor imagery condition (38 ±19 % and 31 ±28 %) compared to the passive condition (16 ±26 % and 5 ±37 %), suggesting that the effect of PAS was more substantial during motor imagery. It can be concluded that the use of motor imagery in neurological rehabilitation may be defended on the basis of these results.
dc.format.extent41 sivua
dc.format.mimetypeapplication/pdf
dc.language.isoeng
dc.rightsThis publication is copyrighted. You may download, display and print it for Your own personal use. Commercial use is prohibited.en
dc.rightsJulkaisu on tekijänoikeussäännösten alainen. Teosta voi lukea ja tulostaa henkilökohtaista käyttöä varten. Käyttö kaupallisiin tarkoituksiin on kielletty.fi
dc.subject.otherplasticity
dc.subject.otherpaired associative stimulation
dc.subject.othermotor imagery
dc.subject.otherneurorehabilitation
dc.titleThe effects of motor imagery and Paired associative stimulation on cortical excitability
dc.title.alternativeEffect of PAS and motor imagery on the excitability of the motor cortex
dc.identifier.urnURN:NBN:fi:jyu-201005031621
dc.type.dcmitypeTexten
dc.type.ontasotPro gradu -tutkielmafi
dc.type.ontasotMaster’s thesisen
dc.contributor.tiedekuntaLiikuntatieteellinen tiedekuntafi
dc.contributor.tiedekuntaFaculty of Sport and Health Sciencesen
dc.contributor.laitosLiikuntabiologian laitosfi
dc.contributor.laitosDepartment of Biology of Physical Activityen
dc.contributor.yliopistoUniversity of Jyväskyläen
dc.contributor.yliopistoJyväskylän yliopistofi
dc.contributor.oppiaineBiomekaniikkafi
dc.contributor.oppiaineBiomechanicsen
dc.rights.accesslevelopenAccessfi
dc.type.publicationmasterThesis
dc.contributor.oppiainekoodi5012
dc.subject.ysoplastisuus
dc.subject.ysostimulointi
dc.subject.ysoaivot
dc.subject.ysokuntoutus
dc.format.contentfulltext
dc.type.okmG2


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