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KMID : 1003120140060010001
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Journal of Korean Society of Neurocognitive Rehabilitation
2014 Volume.6 No. 1 p.1 ~ p.7
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The Change of EEG According to Brain Hemisphere During Executing Simple and Complex Tasks
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Lee Jeong-Weon
Ahn Si-Nae
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Abstract
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Objective: The purpose of this study is to find the difference of Electroencephalogram (EEG) according to tasks of different level visually and to find the influence on each brain hemisphere.
Methods: Fifteen normal adults were selected as targets. EEG was attached according International standard electrode method. Background EEG for 3 minutes, 3 minutes measuring 3 simple tasks, and after 5 minutes of break, 3 complex tasks were measured for 3 minutes. EEG was analyzed quantitatively with power spectrum analysis. With the earned value, t-sample and Pearson correlation coefficient analysis was made through SPSS.
Results: There was no difference between hemispheres according to simple and complex tasks in alpha wave (p>. 05). There was no significant difference between hemispheres in simple tasks in beta wave (p>.05), but there was significant difference between hemispheres in parietal area and temporal area (p=.04l, p=.005). As a result of comparing correlations according to left and right hemispheres in simple and complex tasks, Alpha wave and beta wave both had correlations in simple and complex tasks (p<.001).
Conclusion: There was difference in EEG according to tasks with different visual levels. It was also verified that the amount of information that should be analyzed and interpreted with caution can influence the activity of the brain.
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KEYWORD
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Cerebral hemisphere, EEG, Visual task
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