Institute of Acupuncture and Moxibustion, China Academy of Chinese Medical Sciences, 16 Dongzhimennei, Nanxiaojie, Dongchen District, Beijing 100700, China.
Evid Based Complement Alternat Med. 2013;2013:476064. doi: 10.1155/2013/476064. Epub 2013 Nov 27.
The specificity of acupuncture points (acupoints) is one of the key concepts in traditional acupuncture theory, but the question of whether there is adequate scientific evidence to prove or disprove specificity has been vigorously debated in recent years. Laterality, or the tendency for acupoints on the right or left side of the body to produce different physiological effects, is an important aspect of acupoint specificity. Data is particularly scarce regarding the laterality of the same channel, same-named acupoint located on opposite sides of the body. The aim of this study was to investigate whether Neiguan (PC6) has laterality. A total of eighteen healthy female volunteers were recruited for this study. Electrocardiograms were recorded and heart rate variability was analyzed before, during, and after PC6 was stimulated on either the left or the right side. The results show that during acupuncture, there were significant differences in the standard deviation of RR intervals (STDRR), root mean square of successive differences between RR intervals (RMSSD), and total power between the left PC6 stimulation group and the right PC6 stimulation group, which indicates that PC6 may have laterality.
穴位（ acupoints ）的特异性是传统针灸理论的关键概念之一，但近年来，关于是否有足够的科学证据来证明或否定特异性的问题一直存在激烈的争论。穴位的偏侧性，即身体左右两侧的穴位产生不同生理效应的倾向，是穴位特异性的一个重要方面。关于身体两侧同名穴位的同侧通道的偏侧性的数据特别稀少。本研究旨在探讨内关（PC6）是否具有偏侧性。这项研究共招募了 18 名健康女性志愿者。在左侧或右侧刺激 PC6 前后，记录心电图并分析心率变异性。结果表明，在针刺过程中，左侧 PC6 刺激组和右侧 PC6 刺激组的 RR 间期标准差（ STDRR ）、 RR 间期连续差值的均方根（ RMSSD ）和总功率存在显著差异，这表明 PC6 可能具有偏侧性。
