It is an important means to study the electrical activity of the brain's nerve cells by exploring physiological information of the EEGs from the frequency domain. The gravity frequency is one of the global parameters with using this method. We used the multitaper spectrum method (MTM) spectrum estimation method of good performance to calculate the EEG spectrum and its gravity frequency of subjects under vigilance and vigilance decrement state. The results showed that the gravity frequency of vigilance state was higher than that of vigilance decrement state, the gravity frequency became smaller along with the vigilance decrement, and the location of the gravity frequency shifted to the left in the spectrum. Finally, the monitoring curve of the gravity frequency was acquired by designing an algorithm, and it was used to online monitoring vigilance operators.
Citation：
YANGJianping, ZHANGDeqian, LUJingxiang, SHUAIXiaoyong. Gravity Frequency and Its Monitoring Application of EEG Spectrum in the Vigilance Operation. Journal of Biomedical Engineering, 2014, 31(2): 257-261. doi: 10.7507/1001-5515.20140048
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Copyright © the editorial department of Journal of Biomedical Engineering of West China Medical Publisher. All rights reserved
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- 1. HELTON W S,HOLLANDER T D,WARM J S,et al.Signal regularity and the mindlessness model of vigilance[J].British Journal of Psychology,2005,96(2):249-261.
- 2. 王利,艾玲梅,王四万,等.驾驶疲劳脑电信号节律的特征分析[J].生物医学工程学杂志,2012,29(4):629-633.
- 3. 赵晓华,房瑞雪,荣建,等.基于生理信号的驾驶疲劳综合评价方法试验研究[J].北京工业大学学报,2011,37(10):1511-1516.
- 4. JACOBS G D,FRIEDMAN R.EEG spectral analysis of relaxation techniques[J].Appl Psychophysiol Biofeedback,2004,29(4):245-254.
- 5. RIGOZO N R,ECHER E,NORDEMANN D J R,et al.Comparative study between four classical spectral analysis method[J].Applied Mathematics and Computation,2005,168(1):411-430.
- 6. STRIJKSTRA A M,BEERSMA D G,DRAYER B,et al.Subjective sleepiness correlates negatively with global alpha (8-12Hz) and positively with central frontal theta (4-8Hz) frequencies in the human resting awake electroencephalogram[J].Neurosci Lett,2003,340(1):17-20.
- 7. 邱赤东,谭跃,任光,等.基于多窗谱分析的船舶电机轴承故障检测方法[J].大连海事大学学报,2008,34(4):1-5.
- 8. 卢英俊,吴海珍,钱靚,等.莫扎特奏鸣曲K.448对脑电功率谱与重心频率的影响[J].生物物理学报,2011,27(2):154-166.
- 9. 司刚全,曹晖,张彦斌,等.一种基于功率谱重心的自适应特征信息提取方法[J].数据采集与处理,2008,23(6):691-695.
- 10. 张崇,郑崇勋,裴晓梅,等.生理性精神疲劳的多参数脑电功率谱分析[J].生物医学工程学杂志,2009,26(1):162-166.
