Biomedical Information Technology Center, School of Medicine, Keimyung University, Dalseo-gu, Daegu, Republic of Korea.
J Altern Complement Med. 2012 Sep;18(9):864-9. doi: 10.1089/acm.2011.0095. Epub 2012 Aug 22.
A system is being developed for measurement of biologic active points (BAPs) in humans using a modified dry electrode. The BAPs measuring system analyzed the electrical characteristics and searched for the position of BAPs using modified dry electrodes.
Skin electrical resistance at BAPs and non-BAPs was examined with a modified electrode system for healthy male subjects (ages 21-40). Four (4) acupuncture points of PC-4, PC-5, PC-6, and PC-7 on the left arms were chosen for BAPs. Bio-impedance was then conducted for BAPs and non-BAPS using a lock-in amplifier with a frequency range of 1 Hz-1 kHz.
Resistances of four BAPs were found to decrease to about 29%-59% of non-BAPs and reactance of BAPs was found to decrease to about 23%-41% of non-BAPs. The difference in electrical impedance between BAPs and non-BAPs was easily recognized since the average value of BAPs was measured at lower values than that of non-BAPs. Through these experiments, BAPs could be distinguished from non-BAPs based on electrical impedance. In addition, the electrical impedance model used-the electrical BAPs model-appears to be better suited for skin.
The proposed BAPs electrical model of skin can be adapted for interpretation of changes in the impedance characterization of skin. This system would be used for various skin diagnoses due to the simplicity and reliability of bio-impedance analysis.
正在开发一种使用改良干电极测量人体生物活性点（BAP）的系统。BAP 测量系统通过分析电特性并使用改良干电极搜索 BAP 的位置来进行测量。
使用改良电极系统检查健康男性（21-40 岁）的 BAP 和非-BAP 皮肤电阻。选择左侧手臂上的 PC-4、PC-5、PC-6 和 PC-7 四个穴位作为 BAP。然后使用锁相放大器对 BAP 和非-BAP 进行生物阻抗测量，锁相放大器的频率范围为 1 Hz-1 kHz。
发现四个 BAP 的电阻降低到非-BAP 的 29%-59%左右，BAP 的电抗降低到非-BAP 的 23%-41%左右。由于 BAP 的平均值测量值低于非-BAP，因此很容易识别 BAP 和非-BAP 之间的电阻抗差异。通过这些实验，可以根据电阻抗区分 BAP 和非-BAP。此外，所使用的电阻抗模型——电 BAP 模型——似乎更适合皮肤。
所提出的皮肤 BAP 电模型可以适应皮肤阻抗特征变化的解释。由于生物阻抗分析的简单性和可靠性，该系统将用于各种皮肤诊断。
