基于复杂网络的磁刺激穴位特异性研究

Study on Mechanisms of Magnetic Stimulation of Different Acupoints Based on Complex Network

  • 摘要: 关于穴位特异性的存在目前尚存争议.首次从复杂网络角度,研究磁刺激合谷穴与磁刺激外关穴作用功效的异同.采集两组健康被试静息态与刺激态下的脑电信号并进行预处理;采用皮尔逊统计指标相关系数考察通道间的关联程度,并对每组10个被试静息态与刺激态近18 000对关联强度值进行统计学分析;计算网络指标节点强度值、介数值,并进行统计学分析.研究结果发现,与合谷穴组相比,外关穴组显著影响的连接不仅包括左额叶与顶叶及枕叶的连接,还包括右额叶与左中央区的连接;网络指标在不同穴位刺激下的变化存有显著差异.本文在证实磁刺激穴位能够改变皮质可塑性的同时,也为进一步证明穴位特异性的存在提供了理论依据.

     

    Abstract: It is still controversial whether acupoint specificity exists.The different effects of magnetic stimulation of Hegu and Waiguan were investigated from the perspective of complex networks for the first time.Electroencephalogram data of two groups during resting state and magnetic stimulation were collected and preprocessed.Correlation coefficients between any two channels were calculated and then were analyzed statistically.Node strengths and betweenness centrality were computed.Results showed that magnetic stimulation of Waiguan had a significant effect on connections not only between the left frontal and parietal, occipital lobes, but also the connections between right frontal and left occipital, compared to Hegu.Node strengths and betweenness centrality have significantly different changes over brain regions.The study confirmed again that magnetic stimulation of acupoint can change the cortical plasticity and also provide a theoretical basis for acupoint specificity to some degree.

     

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