中国物理B ›› 2012, Vol. 21 ›› Issue (2): 28701-028701.doi: 10.1088/1674-1056/21/2/028701

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罗昔柳1,王江1,韩春晓2,邓斌1,魏熙乐1,边洪瑞1   

  • 收稿日期:2011-08-23 修回日期:2011-10-08 出版日期:2012-01-30 发布日期:2012-01-30
  • 通讯作者: 王江,jiangwang@tju.edu.cn E-mail:jiangwang@tju.edu.cn

Characteristics analysis of acupuncture electroencephalograph based on mutual information Lempel–Ziv complexity

Luo Xi-Liu(罗昔柳)a), Wang Jiang(王江)a)†, Han Chun-Xiao(韩春晓)b), Deng Bin(邓斌)a), Wei Xi-Le(魏熙乐)a), and Bian Hong-Rui(边洪瑞)a)   

  1. a. School of Electrical and Automation Engineering, Tianjin University, Tianjin 300072, China;
    b. School of Automation and Electrical Engineering, Tianjin University of Technology and Education, Tianjin 300222, China
  • Received:2011-08-23 Revised:2011-10-08 Online:2012-01-30 Published:2012-01-30
  • Contact: Wang Jiang,jiangwang@tju.edu.cn E-mail:jiangwang@tju.edu.cn
  • Supported by:
    Project supported by the Key Program of the National Natural Science Foundation of China (Grant No. 50537030), the National Natural Science Foundation of China (Grant No. 61072012), and the Young Scientists Fund of the National Natural Science Foundation of China (Grant Nos. 50907044, 61104032, and 60901035).

Abstract: As a convenient approach to the characterization of cerebral cortex electrical information, electroencephalograph (EEG) has potential clinical application in monitoring the acupuncture effects. In this paper, a method composed of the mutual information method and Lempel-Ziv complexity method (MILZC) is proposed to investigate the effects of acupuncture on the complexity of information exchanges between different brain regions based on EEGs. In the experiments, eight subjects are manually acupunctured at ‘Zusanli’acupuncture point (ST-36) with different frequencies (i.e., 50, 100, 150, and 200 times/min) and the EEGs are recorded simultaneously. First, MILZC values are compared in general. Then average brain connections are used to quantify the effectiveness of acupuncture under the above four frequencies. Finally, significance index P values are used to study the spatiality of the acupuncture effect on the brain. Three main findings are obtained: (ⅰ) MILZC values increase during the acupuncture; (ⅱ) manual acupunctures (MAs) with 100 times/min and 150 times/min are more effective than with 50 times/min and 200 times/min; (ⅲ) contralateral hemisphere activation is more prominent than ipsilateral hemisphere's. All these findings suggest that acupuncture contributes to the increase of brain information exchange complexity and the MILZC method can successfully describe these changes.

Key words: electroencephalograph, acupuncture, mutual information Lempel-Ziv complexity method

中图分类号:  (EEG and MEG)

  • 87.19.le
87.85.Pq (Biomedical imaging) 07.05.Pj (Image processing)