磁诱导大脑谐振效应的研究

发布时间：2018-05-31 11:58

本文选题：极低频脉冲磁场 + 脑电　；参考：《天津大学》2012年硕士论文

【摘要】：磁刺激因其安全有效、无痛无损、能够进行深部组织刺激等诸多优势,在调节人体神经功能、提高人体免疫力及康复理疗过程等方面得到了广泛的应用。但由于人体生命活动过程有其自身的复杂性,而且不同类型的磁场产生的影响也不尽相同,必须深入研究电磁场对人体的生物效应及其作用机理。极低频脉冲电磁场的频率范围是0~300Hz,由于人体的脑电、心电等生物电都处于这个范围,因此研究极低频电磁场对人体的影响更有意义。本课题拟采用脑电的方法,研究极低频脉冲磁场对大脑的作用,通过极低频磁刺激诱导大脑节律发生改变,使大脑产生谐振,进而影响人体整个生命活动和功能状态。本文的主要内容包括以下几方面: (1)研究采用1Hz、10mT的极低频电磁场刺激大脑枕部,设计了极低频脉冲磁刺激大脑自发脑电对比实验和极低频磁刺激的听觉诱发脑电对比实验。 (2)应用EEG功率谱、磁诱导事件相关去同步化/同步化、样本熵及听觉诱发脑电的时域分析等信号处理方法对比分析了磁刺激前后的脑电数据。分析结果显示:受极低频脉冲磁场作用,大脑发生了较为明显的低频段事件相关同步现象和高频段的事件相关去同步现象,大脑的电活动减少,复杂度降低。综合时、频、空三域的分析,表明磁场可以诱导脑电产生与刺激节律一致的改变,向诱导节律方向偏移,即所谓的谐振效应,进一步使大脑进入抑制状态。 (3)在实验基础上,探究了磁场影响大脑的生理机制,讨论了磁场谐振效应理论和膜内相干振动模型及细胞跨膜传导系统模型,为全面探索磁场的生物效应提供了借鉴。综上,本文阐述了磁诱导大脑谐振效应的存在性,证明了磁诱导可以作用于大脑使之受到抑制,同时也丰富了磁诱导大脑谐振效应理论,为临床实践和科研探索奠定了理论基础。
[Abstract]:Magnetic stimulation has been widely used in regulating human neural function, improving human immunity and rehabilitating physiotherapy because of its safety and effectiveness, painless and nondestructive, and can stimulate deep tissue. However, the biological effects of electromagnetic field on human body and its mechanism must be deeply studied because of the complexity of human life and the different types of magnetic field. The frequency range of extremely low frequency pulse electromagnetic field is 0 ~ 300 Hz. Because the electroencephalogram, ECG and other bioelectricity are in this range, it is more meaningful to study the effect of very low frequency electromagnetic field on human body. This paper intends to study the effect of very low frequency pulsed magnetic field on the brain by using the method of EEG. The brain rhythm is induced by very low frequency magnetic stimulation and the brain resonates, thus affecting the whole life activity and function state of human body. In this paper The main contents include the following: In this study, the occipital region of the brain was stimulated with an extremely low frequency electromagnetic field of 1 Hz ~ 10mT. The contrast experiment of spontaneous brain electrical stimulation with extremely low frequency pulse magnetic stimulation and the contrast experiment of auditory evoked EEG with extremely low frequency magnetic stimulation were designed. (2) EEG power spectrum, magnetic-induced event-related de-synchronization / synchronization, sample entropy and time-domain analysis of auditory evoked EEG were used to compare and analyze EEG data before and after magnetic stimulation. The results show that, under the action of very low frequency pulsed magnetic field, the phenomenon of event-related synchronization in low frequency band and event related desynchronization in high frequency band occur in the brain, and the electrical activity of the brain is reduced and the complexity is reduced. The analysis of time, frequency and space three fields shows that magnetic field can induce EEG to produce changes consistent with the stimulation rhythm and shift to the induced rhythm, which is called resonance effect, which further makes the brain enter a state of inhibition. 3) on the basis of experiments, this paper probes into the physiological mechanism of magnetic field affecting the brain, discusses the theory of magnetic resonance effect, the model of coherent vibration in membrane and the model of cell transmembrane conduction system, which provides a reference for exploring the biological effect of magnetic field in an all-round way. In summary, the existence of magnetic induced brain resonance effect is discussed in this paper. It is proved that magnetic induction can inhibit the brain and enrich the theory of magnetic induced brain resonance effect. It lays a theoretical foundation for clinical practice and scientific research.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：R318.0

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