Cortico-muscular communication during the generation of static shoulder abduction torque in upper limb following stroke

Jun Yao*, Julius P A Dewald

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Scopus citations

Abstract

In this study, we introduced a new index, namely overlap index, to quantify the spatial resolution of cortical activity for muscle coordination based on the measurement of EEG-EMG coherence during a motor task. By applying this index on 4 control and 4 hemisphere chronic stroke subjects we successfully identified that there is a significantly increased overlap between biceps brachii at the elbow and intermediate deltoids at the shoulder when stroke subjects generating a static shoulder abduction torque. Muscles that have increased overlap in cortex are consistent with those that coactivate abnormally in stroke when compared to control subjects. These results not only proof the effectiveness of this index in quantifying the spatial resolution of cortical activity but also point out that the reduced spatial resolution of muscle activity in cortex can be a reason for the abnormal muscle coactivation observed in impaired arms following stroke. Quantification of the cortical overlap index will provide us with new tools to test for the modifiability of the nervous system following clinical interventions. This work will be an important step toward our long-term goal of developing more effective rehabilitation techniques for the treatement of stroke.

Original languageEnglish (US)
Title of host publication28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06
Pages181-184
Number of pages4
DOIs
StatePublished - 2006
Event28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06 - New York, NY, United States
Duration: Aug 30 2006Sep 3 2006

Publication series

NameAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
ISSN (Print)0589-1019

Other

Other28th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, EMBS'06
CountryUnited States
CityNew York, NY
Period8/30/069/3/06

ASJC Scopus subject areas

  • Signal Processing
  • Biomedical Engineering
  • Computer Vision and Pattern Recognition
  • Health Informatics

Fingerprint Dive into the research topics of 'Cortico-muscular communication during the generation of static shoulder abduction torque in upper limb following stroke'. Together they form a unique fingerprint.

Cite this