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Statements

Subject Item
n2:RIV%2F61989100%3A27740%2F14%3A86092421%21RIV15-MSM-27740___
rdf:type
n11:Vysledek skos:Concept
rdfs:seeAlso
http://journal.frontiersin.org/article/10.3389/fncom.2013.00168/abstract
dcterms:description
Background: Motor imagery (MI) is the mental performance of movement without muscle activity. It is generally accepted that MI and motor performance have similar physiological mechanisms. Purpose: To investigate the activity and excitability of cortical motor areas during MI in subjects who were previously trained with an MI-based brain-computer interface (BCI). Subjects and Methods: Eleven healthy volunteers without neurological impairments (mean age, 36 years; range: 24–68 years) were either trained with an MI-based BCI (BCI-trained, n = 5) or received no BCI training (n = 6, controls). Subjects imagined grasping in a blocked paradigm task with alternating rest and task periods. For evaluating the activity and excitability of cortical motor areas we used functional MRI and navigated transcranial magnetic stimulation (nTMS). Results: fMRI revealed activation in Brodmann areas 3 and 6, the cerebellum, and the thalamus during MI in all subjects. The primary motor cortex was activated only in BCI-trained subjects. The associative zones of activation were larger in non-trained subjects. During MI, motor evoked potentials recorded from two of the three targeted muscles were significantly higher only in BCI-trained subjects. The motor threshold decreased (median = 17%) during MI, which was also observed only in BCI-trained subjects. Conclusion: Previous BCI training increased motor cortex excitability during MI. These data may help to improve BCI applications, including rehabilitation of patients with cerebral palsy. Background: Motor imagery (MI) is the mental performance of movement without muscle activity. It is generally accepted that MI and motor performance have similar physiological mechanisms. Purpose: To investigate the activity and excitability of cortical motor areas during MI in subjects who were previously trained with an MI-based brain-computer interface (BCI). Subjects and Methods: Eleven healthy volunteers without neurological impairments (mean age, 36 years; range: 24–68 years) were either trained with an MI-based BCI (BCI-trained, n = 5) or received no BCI training (n = 6, controls). Subjects imagined grasping in a blocked paradigm task with alternating rest and task periods. For evaluating the activity and excitability of cortical motor areas we used functional MRI and navigated transcranial magnetic stimulation (nTMS). Results: fMRI revealed activation in Brodmann areas 3 and 6, the cerebellum, and the thalamus during MI in all subjects. The primary motor cortex was activated only in BCI-trained subjects. The associative zones of activation were larger in non-trained subjects. During MI, motor evoked potentials recorded from two of the three targeted muscles were significantly higher only in BCI-trained subjects. The motor threshold decreased (median = 17%) during MI, which was also observed only in BCI-trained subjects. Conclusion: Previous BCI training increased motor cortex excitability during MI. These data may help to improve BCI applications, including rehabilitation of patients with cerebral palsy.
dcterms:title
Increased motor cortex excitability during motor imagery in brain-computer interface trained subjects Increased motor cortex excitability during motor imagery in brain-computer interface trained subjects
skos:prefLabel
Increased motor cortex excitability during motor imagery in brain-computer interface trained subjects Increased motor cortex excitability during motor imagery in brain-computer interface trained subjects
skos:notation
RIV/61989100:27740/14:86092421!RIV15-MSM-27740___
n3:aktivita
n15:P
n3:aktivity
P(ED1.1.00/02.0070), P(EE.2.3.20.0073)
n3:cisloPeriodika
NOV 22
n3:dodaniDat
n8:2015
n3:domaciTvurceVysledku
Frolov, Alexander
n3:druhVysledku
n17:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
21151
n3:idVysledku
RIV/61989100:27740/14:86092421
n3:jazykVysledku
n7:eng
n3:klicovaSlova
neurorehabilitation; functional MRI; navigated TMS; motor imagery; brain-computer interface
n3:klicoveSlovo
n4:functional%20MRI n4:motor%20imagery n4:neurorehabilitation n4:navigated%20TMS n4:brain-computer%20interface
n3:kodStatuVydavatele
CH - Švýcarská konfederace
n3:kontrolniKodProRIV
[82B5F51BD06B]
n3:nazevZdroje
Frontiers in Computational Neuroscience
n3:obor
n19:FH
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
7
n3:projekt
n14:EE.2.3.20.0073 n14:ED1.1.00%2F02.0070
n3:rokUplatneniVysledku
n8:2014
n3:svazekPeriodika
7
n3:tvurceVysledku
Mokienko, Olesya A. Chernikova, Liudmila A. Bobrov, Pavel Dmitrievitch Kulikova, Sofia N. Frolov, Alexander Piradov, Mikhail A. Chervyakov, Alexander V.
n3:wos
000327819900001
s:issn
1662-5188
s:numberOfPages
27
n9:doi
10.3389/fncom.2013.00168
n13:organizacniJednotka
27740