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http://dx.doi.org/10.5762/KAIS.2020.21.2.124

The Availability of Amplitude, Asymmetry and Mean Frequency of Alpha Intrinsic Rhythm in Old Age as Brain Health Indicators  

Shim, Jun-Young (Department of Brain Education, University of brain Education)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.21, no.2, 2020 , pp. 124-132 More about this Journal
Abstract
This study examines the clinical availability of alpha amplitude, asymmetry and mean frequency in old age as EEG indexes reflecting brain health condition. The EEGs of prefrontal lobes in eye closure state were measured for 4 minutes with 72 male and female elderly people aged 73. Subjects were divided into higher and lower groups based on average values of alpha amplitude, asymmetry and mean frequency. The results of correlations and t-test among EEG indexes were as follows. First, the higher Alpha altitude was, the higher physical and mental stress resistance and left-to-right brain communication were, and the lower mean Alpha mean frequency location was. The higher Alpha asymmetry was, the lower left-to-right communication level was. Second, as Alpha power of right brain was higher than that of left brain, Alpha amplitude and mental stress resistance and left-to-right brain communication level were higher. Third, as Alpha mean frequency location was higher, Alpha amplitude and mental anti-stress level were lowered and arousal level was enhanced. These high correlations and complementary meaning among quantitative EEG indicators demonstrated the possibility of biomarkers reflecting brain health state in old age.
Keywords
Elderly; Brain health; Alpha rhythm; Amplitude; Asymmetry; Mean frequency; EEG index;
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Times Cited By KSCI : 3  (Citation Analysis)
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