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

Kang, Jeong-Il (Department of Physical Therapy, Graduate School, Sehan University)
Choi, Hyun (Department of Physical Therapy, Graduate School, Sehan University)
Publication Information
The Journal of Korean Physical Therapy / v.24, no.4, 2012 , pp. 262-267 More about this Journal
Abstract
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.
Keywords
Movement related cortical potential; Concentric contraction; Eccentric contraction; Cortical activation; Brain mapping;
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Times Cited By KSCI : 2  (Citation Analysis)
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