Mayer-Gindner A, Lek-Uthai A, Abdallah O, Bolz A
Abt. Medizinische Informationstechnik, Forschungszentrum für Informatik an der Universität Karlsruhe.
Biomed Tech (Berl). 2004 May;49(5):117-24. doi: 10.1515/BMT.2004.024.
Skin impedance measurements at various skin sites yield different impedance loci for normal skin and special skin sites. The results of skin impedance measurements taken at such sites with a two-electrode measurement system are presented herein. Some of these sites can be identified as acupuncture points. Data from 4 volunteers were acquired by means of a data acquisition board and a measuring system consisting of the measurement circuit, including several electrode types, and a power supply. The Cole model is a model for an equivalent electrical circuit of the skin-electrode system. The system was used to derive skin-typical parameters from the Bode plot of the whole system. These parameters are the fractional power a, the pseudo-capacity K, the parallel resistance Rp, and the serial resistance Rs of the equivalent electrical circuit. The results show that the measured parameters differ between normal skin and special skin sites. These effects have not previously been discovered by other authors, since there has been no systematic investigation of many acupuncture points to date, and there has been no apparent need for such an investigation. A number of necessary criteria for acupuncture point detection can be derived from the results obtained.
在不同皮肤部位进行的皮肤阻抗测量，对于正常皮肤和特殊皮肤部位会产生不同的阻抗轨迹。本文展示了使用双电极测量系统在这些部位进行皮肤阻抗测量的结果。其中一些部位可被识别为穴位。通过数据采集板以及由测量电路（包括几种电极类型）和电源组成的测量系统，获取了4名志愿者的数据。科尔模型是皮肤 - 电极系统等效电路的模型。该系统用于从整个系统的波特图中推导典型皮肤参数。这些参数是等效电路的分数功率a、伪电容K、并联电阻Rp和串联电阻Rs。结果表明，正常皮肤和特殊皮肤部位的测量参数有所不同。这些效应此前尚未被其他作者发现，因为迄今为止尚未对众多穴位进行系统研究，且也没有明显的此类研究需求。从所得结果中可以得出一些穴位检测的必要标准。
