Evidence of hemiplegic hand function recovery following chronic stroke patients using EMG, fMRI and DTI

K. S. Tae, S. J. Song, B. S. Han, S. Y. Lee, G. Y. Park, C. H. Sohn, Y. H. Kim

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The aim of this study was to evaluate the motor recoveries in 3 chronic hemiparetic patients with Fugl-Meyer assessment (FMA), modified Ashworth scale (MAS), manual muscle test (MMT) scores, EMG characteristics, cortical activation and white matter changes before and after the training program with a symmetrical upper-limb motion trainer training. The training was performed at 1 hr/day, 5 days/week during 6 weeks. Electromyographic activities of the affected hand were recorded during isometric wrist flexion/extension movements. In all patients, FMA and MMT scores except MAS were significantly improved after the 6-week training. Delay in onset/offset of muscle contraction significantly decreased in the affected wrist during the training. The co-contraction ratio of flexor/extensor muscles decreased significantly after the training. We compared cortical activations in two different tasks before and after the training program. Functional magnetic resonance imaging (fMRI) studies in unilateral wrist movement showed that cortical activations decreased in ipsilateral SMC but increased in contralateral SMC and ipsilateral cerebellum. In bilateral wrist movements, bilateral SMC, PMA, SMA and cerebellum showed cortical reorganizations. Diffusion tensor imaging (DTI) results also showed that fractional anisotropy (FA) significantly increased after the training. It seemed that the cortical reorganization was induced by the 6- week training using the symmetrical upper limb motion trainer.

Original languageEnglish
Title of host publicationIFMBE Proceedings
EditorsSun I. Kim, Tae Suk Suh
PublisherSpringer Verlag
Pages2961-2964
Number of pages4
Edition1
ISBN (Print)9783540368397
DOIs
StatePublished - 2007
Externally publishedYes
Event10th World Congress on Medical Physics and Biomedical Engineering, WC 2006 - Seoul, Korea, Republic of
Duration: Aug 27 2006Sep 1 2006

Publication series

NameIFMBE Proceedings
Number1
Volume14
ISSN (Print)1680-0737
ISSN (Electronic)1433-9277

Conference

Conference10th World Congress on Medical Physics and Biomedical Engineering, WC 2006
Country/TerritoryKorea, Republic of
CitySeoul
Period08/27/0609/1/06

Keywords

  • Diffusion tensor imaging
  • Electromyogram
  • Functional resonance imaging
  • Motor recovery
  • Stroke

Fingerprint

Dive into the research topics of 'Evidence of hemiplegic hand function recovery following chronic stroke patients using EMG, fMRI and DTI'. Together they form a unique fingerprint.

Cite this