Neurofunctional changes after a single mirror therapy intervention in chronic ischemic stroke

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dc.contributor.authorNovaes, Morgana M.
dc.contributor.authorPalhano-Fontes, Fernanda
dc.contributor.authorPeres, Andre
dc.contributor.authorMazzetto-Betti, Kelley
dc.contributor.authorPelicioni, Maristela
dc.contributor.authorAndrade, Kátia C.
dc.contributor.authorSantos, Antonio Carlos dos
dc.contributor.authorPontes-Neto, Octavio
dc.contributor.authorAraújo, Dráulio Barros de
dc.date.accessioned2018-05-09T13:27:03Z
dc.date.available2018-05-09T13:27:03Z
dc.date.issued2018-03-20
dc.description.resumoBackground: Mirror therapy (MT) is becoming an alternative rehabilitation strategy for various conditions, including stroke. Although recent studies suggest the positive benefit of MT in chronic stroke motor recovery, little is known about its neural mechanisms. Purpose: To identify functional brain changes induced by a single MT intervention in ischemic stroke survivors, assessed by both transcranial magnetic stimulation (TMS) and functional magnetic resonance imaging (fMRI). Materials and methods: TMS and fMRI were used to investigate 15 stroke survivors immediately before and after a single 30-min MT session. Results: We found statistically significant increase in post-MT motor evoked potential (MEP) amplitude (increased excitability) from the affected primary motor cortex (M1), when compared to pre-MT MEP. Post-MT fMRI maps were associated with a more organized and constrained pattern, with a more focal M1 activity within the affected hemisphere after MT, limited to the cortical area of hand representation. Furthermore, we find a change in the balance of M1 activity toward the affected hemisphere. In addition, significant correlation was found between decreased fMRI β-values and increased MEP amplitude post-MT, in the affected hemisphere. Conclusion: Our study suggests that a single MT intervention in stroke survivors is related to increased MEP of the affected limb, and a more constrained activity of the affected M1, as if activity had become more constrained and limited to the affected hemisphere.pt_BR
dc.identifier.citationNOVAES, M. M. et al. Neurofunctional changes after a single mirror therapy intervention in chronic ischemic stroke. Int J Neurosci., v. 20, p. 1-9, mar./2018. DOI:10.1080/00207454.2018.1447571pt_BR
dc.identifier.doi10.1080/00207454.2018.1447571
dc.identifier.urihttps://repositorio.ufrn.br/jspui/handle/123456789/25140
dc.languageengpt_BR
dc.rightsAcesso Abertopt_BR
dc.subjectMirror therapypt_BR
dc.subjectischemic strokept_BR
dc.subjectstroke rehabilitationpt_BR
dc.subjecttranscranial magnetic stimulationpt_BR
dc.subjectfunctional magnetic resonance imagingpt_BR
dc.titleNeurofunctional changes after a single mirror therapy intervention in chronic ischemic strokept_BR
dc.typearticlept_BR

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