基于极低频磁刺激的大脑谐振效应  

Resonance Effects on Human Brain Based on Magnetic Stimulation of Extremely Low Frequency

作　　者：王学民[1] 陈芳[1] 郁洪强 周鹏[1] 

机构地区：[1]天津大学精密仪器与光电子工程学院,天津300072 [2]天津市医疗器械技术审评中心,天津300191

出　　处：《天津大学学报》2011年第9期823-828,共6页Journal of Tianjin University(Science and Technology)

基　　金：国家自然科学基金资助项目(51007063);教育部博士点基金资助项目(200800561089)

摘　　要：为了探索极低频脉冲磁刺激对大脑的影响,设计了极低频磁刺激自发脑电对比实验,对受试者进行相同强度、频率、作用时间的磁刺激,引入磁诱导事件相关去同步/同步(ERD/ERS)的概念,综合分析了功率谱的变化以及ERD/ERS现象的产生情况,并对各导联不同频段的ERD/ERS信号进行脑地形图成像,获得了ERD/ERS在大脑不同区域的空间分布,发现各个导联对应的头部区域发生了不同程度的低频段的ERS现象以及高频段的ERD现象,表明极低频磁刺激可诱发低频脑电波,使大脑产生谐振效应,取得了发现性的成果.A comparative experiment of the spontaneous EEG by the extremely low frequency magnetic stimulation is designed to explore the influence of the extremely low frequency pulse magnetic stimulation on the human brain. The subjects receive magnetic stimulation in the same intensity, frequency, and duration for 30 min. The concept of magnetic stimulation induced event-related desynchronization/synchronization （ERD/ERS） is introduced. By the com- prehensive analysis of EEG in frequency and space, the changes in power spectrum are studied, and ERD/ERS phenomena is found, and brain map of ERD/ERS is imaged. ERD/ERS in the spatial distribution of different brain regions is clear. It is proved that the brain produces ERD in the low frequency band and ERS in the high frequency band. These results indicate the extremely low frequency magnetic stimulation can induce the low frequency activities and lead to the human brain＇s resonance effects. Hence, the result is productive.

关 键 词：脑电信号 极低频磁刺激 事件相关去同步/同步电位 谐振效应 

分 类 号：R318[医药卫生—生物医学工程]