Comparison of Cerebral Cortical Neuron Excitability of Normal Elderly People during Concentric and Eccentric Contraction

정상 노년층의 동심성 및 편심성 수축 시 대뇌 피질신경원 흥분도 비교

  • Kang, Jeong-Il (Department of Physical Therapy, Graduate School, Sehan University) ;
  • Choi, Hyun (Department of Physical Therapy, Graduate School, Sehan University)
  • 강정일 (세한대학교 일반대학원 물리치료학과) ;
  • 최현 (세한대학교 일반대학원 물리치료학과)
  • Received : 2012.06.30
  • Accepted : 2012.08.15
  • Published : 2012.08.25


Purpose: This study was designed to analyze the differences in cerebral cortex activity of the elderly after extracting the movement related cortical potentials (MRCPs) from electroencephalogram (EEG) during a concentric and eccentric contraction of the elbow joint flexors, and entering them into the brain-mapping program to make the images. Methods: Right-dominant normal elderly people were divided into an eccentric contraction group and a concentric contraction group. Then, their MRCPs were measured using EEG and sEMG, during an eccentric and concentric contraction. Then, they were converted into images using the brain-mapping program. Results: Eccentric contraction group's $C_3$ and Cz showed statistically higher mean values of MRCP positive potential than the concentric contraction group. Conclusion: Researching a cerebral cortex activity, using MRCP, would provide basic data for clinical neuro-physiological researches on aging or neural plasticity of patients with a central nervous system injury.


Supported by : 세한대학교


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