Research on oviective evaluation method of the Deh-Chi stage caused by manual acupucuture

一种称为“德气”的现象被描述为针刺过程中深层组织的一种疼痛、麻木或严重肿胀。本研究的目的是建立一种通过多种生物信号测量来客观评价手法针刺所致的德池期的方法。首先，我们测量了针刺正确穴位时的多种生物信号(脑电：脑电，手指指动脉血容图：PPG，血压：血压，皮温：ST，皮肤阻抗：SI)。我们从每个生物信号中提取一个指数，并检查每个生物信号和指数在德智阶段是如何变化的。结果，我们证实了从每个生物信号中提取的EEC、PPG、SI和指数都有显著的变化。结果提示，通过量化EEC、PPG、SI三种生物信号的变化，可以建立一种客观评价德赤期的方法，即针刺疗效。

A phenomenon called "Deh-chi" is described as a kind of soreness, numbness or heavy swelling; in deep tissues during acupuncture. The purpose of this research is establishing an objective evaluatoin method of the Deh-Chi stage caused by manual acupucuture by multiple biosignal measurements. At first, we measured multiple biosignals(electroencephalogram:EEG, finger photoplethysmogram:PPG, blood pressure:BP, skin temperature:ST, skin impedance:SI) when the needle was at the right acupucuture point and the there was Deh-chi. We extract an index from each biosignal and examine how each biosignal and indeix change at the Deh-Chi stage. As a result, we confirmed that there is remarkable change in EEC, PPG, SI, and index which was extracted from each biosignal. The result suggested that there was possibility of establishing an objective evaluation method of the Deh-Chi stage, I.e., therapeutical effect of acupuncture by Quantifying the change in three biosignals, EEC, PPG and SI.