Zhang Jingjing, Yu Renhuan, Zhao Enlu, Zhou Quan, Gai Shuping
Department of Nephrology, Xiyuan Hospital of the China Academy of Chinese Medical Sciences, 1 Xiyuan Caochang, Haidian District, Beijing 100091, China.
State Key Laboratory of Transducer Technology, Institute of Electronics, Chinese Academy of Sciences, 19 Fourth Ring Road North, Haidian District, Beijing 100090, China.
Evid Based Complement Alternat Med. 2021 Apr 12;2021:6638807. doi: 10.1155/2021/6638807. eCollection 2021.
Since the 1950s, many studies have been conducted on the electrical properties of acupuncture points (acupoints), especially their bio-resistance characteristics. Results of such studies have been inconclusive due to factors such as sweat gland density and compounding factors of applying electrical stimulation. In this study, a power spectrum instrument was used to assess the power spectrum and power of acupoints and nonacupoints without electrical stimulation. Using such instrumentation, specificity of electrical signals of acupoints was also explored.
Thirty-six subjects (29 females, 7 males) participated in the study. Stainless steel acupuncture needles (diameter 0.35 mm; length 50 mm) were used. Five acupoints were tested: ST 36, SP 6, GB 39, GB 37, and K I9. Four control sites 0.5-1.0 cm adjacent to each acupoint were chosen. After needle insertion into the acupoint and control sites, the needles were attached to the power spectrum instrument to acquire any electrical signals. Acquire signals were analyzed using self-written software.
Power spectrum difference between acupoint and nonacupoint signals was 0-2 Hz. Results of -test or signed rank sum test ( = 0.05) found that electrical signals between acupoints and nonacupoints were markedly different ( < 0.05).
Acupoint bioelectricity signals are higher than adjacent nonacupoints. The most significant difference is distributed between 0 Hz and 2 Hz.
自20世纪50年代以来，已经开展了许多关于穴位电特性的研究，尤其是其生物电阻抗特性。由于诸如汗腺密度以及施加电刺激的复合因素等原因，此类研究结果尚无定论。在本研究中，使用功率谱仪在无电刺激的情况下评估穴位和非穴位的功率谱及功率。利用该仪器，还探索了穴位电信号的特异性。
36名受试者（29名女性，7名男性）参与了本研究。使用不锈钢针灸针（直径0.35毫米；长度50毫米）。测试了五个穴位：足三里（ST 36）、三阴交（SP 6）、悬钟（GB 39）、光明（GB 37）和照海（KI 9）。在每个穴位相邻0.5 - 1.0厘米处选择四个对照部位。将针插入穴位和对照部位后，将针连接到功率谱仪以采集任何电信号。采集到的信号使用自编软件进行分析。
穴位与非穴位信号之间的功率谱差异为0 - 2赫兹。t检验或符号秩和检验结果（α = 0.05）发现，穴位与非穴位之间的电信号存在显著差异（P < 0.05）。
穴位生物电信号高于相邻的非穴位。最显著的差异分布在0赫兹和2赫兹之间。
