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KMID : 0357220120240040262
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Journal of Korean Society Physical Therapy
2012 Volume.24 No. 4 p.262 ~ p.267
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Comparison of Cerebral Cortical Neuron Excitability of Normal Elderly People during Concentric and Eccentric Contraction)
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Kang Jeong-Il
Choi Hyun
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Abstract
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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 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.
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KEYWORD
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Movement related cortical potential, Concentric contraction, Eccentric contraction, Cortical activation, Brain mapping,
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