Temperature Measurement In Deep Tissue Along Pericardium Meridian Of Forearm And Its Variation During Irradiating Neiguan Acupoint By Laser Beam

Objective: The previous reports of our lab show that the infrared radiant track along meridian (IRRTM) is a biological phenomenon of human being under normal condition. The temperatures over body surface and in deep tissue along Du meridian are higher than that of the non-meridian area. In order to clarify is there a common character in the distribution of the temperature in deep tissue underneath the meridian courses, and provide some experimental materials for elucidating the mechanism of the formation of IRRTM. The temperature in deep tissue underneath the Pericardium meridian course of forearm are observed, its relation to skin temperature, and the influence of irradiating Neiguan (PC6) with Laser beam on these character are also observed in this study.Methods: 25 healthy volunteers were observed. The temperatures in deep tissue of 3 points along pericardium meridian of forearm, namely Ximen (PC4), 2 Cun above Ximen and 4 Cun above Ximen were measured by an apparatus with 3 needlike temperature transducers. The depth of points measured was 1 cm under skin surface. At the same time, the skin temperature along Pericardium meridian course was measured. The influence of irradiating Neiguan (PC6) by Laser beam on both the skin temperature and the deep tissue temperature of points mentioned above were further observed. The variation of correlativity between the two kinds of temperatures during irradiation was also evaluated.Results:1. In most of the cases, the temperatures in deep tissue of above 3 points along Pericardium meridian course were higher than that of bilateral controls, however, the temperature of deep tissue along meridian course might be lower than that of its bilateral controls in some cases. In general, such a character of following the meridian in thedistribution of deep tissue temperatures was significant in statistical proceeding.2. Under normal condition, there was a very highly positive correlation between temperatures of skin and deep tissue, but this correlation reduced during irradiating Laser beam on Neiguan (6) because the skin temperature rose more rapid and intensive than that of the deep tissue temperature. And then the correlativity recovered gradually after stopping irradiation.3. The temperature of deep tissue along Pericardium meridian course of forearm of healthy subjects rose more rapid than that of non-meridian controls during irradiation of Laser beam and could be kept a certain period of time.Conclusion:The above results of observation reveal that (1) the temperature of deep tissue along Pericardium meridian course is markedly different from that of bilateral non-meridian area, showing a character of following the meridian, in a majority of the subjects observed; (2) the thermal conductivity of the related tissue along meridian course is better than that of non-meridian area. It is obvious that the thermal energy in deep tissue may conduct outwards to skin surface. This may be an important factor for the formation of infrared radiant track along meridian course. These facts provide an experiment basis for elucidating the mechanism of formation of IRRTM in one aspect, and suggest that meridian may be a channel, with polynary structure, related to the transfer and transmission of the material, energy and signal in the regulation of the function of the human body.