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在黃帝內經經脈篇中，詳細敘述了氣血在十二經絡循行之方向，為中醫診斷治療之依據，但一直沒有科學的證據證實。在前人研究手厥陰心包絡經的電性中，我們了解經絡既是電流良導路徑，同時也是電磁波的快傳途徑，前者可用導電度表示，而後者可用極化度代表，為經絡的循行研究開啟量化的指標。
為了推廣前人的經驗，我們選取40人手少陽三焦經絡之外關穴與天井穴作為穴位組，及外關橈側旁開1公分與天井橈側旁開1公分作為對照組，進行測量，比較二組之間及各組之向心與離心方向導電度與極化度的差異。並且再選取40人的左右手足經絡之對稱穴位 (左右手外關穴、左右手大陵穴、左右足三陰交穴)與非對稱穴位 (左天井穴右外關穴、左大陵穴右孔最穴、左孔最穴右大陵穴、左三陰交穴右築賓穴、左築賓穴右三陰交穴)不同方向之導電度與極化度的測量來比較各組之間的差異。採用Paired t Test及用ANOVATest分析，經統分析得到以下結果：(1)穴位間導電度無論向心或離心方向，均明顯大於非穴位(p<0.001)，顯示人體電流訊息沿經絡傳遞損耗較小。(2)穴位間之導電度具有方向性(p<0.05)，向心方向較易通過電流，與傳統理論比較近似經氣之走向。(3)對照組之導電度也具有方向差異(p<0.005)，方向與穴位組相同。(4)對照組之極化度具有方向性(p<0.01)，以向心方向極化度較高。(5)穴位間之極化度不具有顯著方向性。(6)穴位間之極化度與對照組不具有顯著差異。(7)人體左右手足電流方向都以右向左比左向右所得之導電度較高，且具有顯著差異(p<0.001)。(8)人體手足經絡左右對稱組無論由右向左或由左向右方向之導電度 ，均高於非對稱組，除了一組不具有顯著差異外，其他組皆具有統計上之顯著差異(p<0.001，p<0.05)。顯示人體左右對稱結構之間的導電性不對稱，且左右兩個對稱穴位具有較非對稱穴位更好的匹配關係，選擇具有較好匹配關係的穴位，從電學上來看較能達到良好的溝通。
It was written in the Huang-Di-Nei-Jing-Jing-Mo-Pien, in detail the pathway of Qi-Blood circulating in a human body which is the basis of diagnosis and treatment of traditional Chinese medicine. However, there is still no scientific support. By the results of former research done in studying the electric property of pericardium meridian he got that the meridian is a good conductivity path for electric current and is also a high way for electromagnetic wave to propagate. The good conductivity can be expressed by the value of peak current and the speed of electromagnetic wave can be described by polarization of the meridian.
In order to further study the other meridians, we chose the acupoints of Wai-Kuan (T5) and Tien-Ching (T1O) of triple warmer meridian of 40 subjects as the acupoint group and the points 1 cm toward the radial sides of both Wai-Kuan (T5) and Tien-Ching(TIO) as the control group Measurements were done to study the difference between concentric and ecentric conduction and polarization.
Furthermore, another 40 subject''s bilateral symmetrical acupoints (Wai-Kuan, Ta-Ling, San-Yin-Chiao) of limbs and asymmetrical acupoints (Left-Tien-Ching-Right-Wai-Kuan, Left-Ta-Ling-Right-Kung-Tsui, Left- Kung-Tsui-Right-Ta-Ling, Left-San-Yin-Chiao-Right-chu-pm, Left-Chu- Pin-Right-San-Yin-Chiao) of limbs were chosen and measured. The data were analyzed by paired-t test and ANOVA test which give the following results：
(1) The direction between the conductivity disregarding concentric or eccentric, is significantly larger than the nonacupoints (P<0.001) indicating that the current message conveyed in human through meridians is at less expenditure .
(2) The conducting current between the acupoints is directional (P<0.005) with the concentric providing easier access to the current. This is quite compatible with the traditional theory of the flow of Jing-Qi .
(3) The conducting current in the control group also possesses variation in direction of flow (P<0.005), identical as the acupoints group .
(4) The polarization of the control group (P<0.001) is directional, which is higher in the concentric pathway .
(5) The polarization between the acupoints does not possess obvious direction.
(6) There is no significant difference in polarization between the acupoints group and the control group .
(7) The current flow between the bilateral limbs starts from the right to the left. It is much higher than that from the left to the right and reveals significant difference.
(8) The current measured from the meridians of the limbs, symmetrical and bilateral is higher than the asymmetriqal group regardless of the flow of direction, with an exception of a group which shows no significant difference, all groups in our experiment has a statistically significant variation as the outcome (P<0.001) (P<0.05).
These conclusions reveal that a morphological symmetric human body is asymmetrical in its conductivity, the bilateral and symmetrical acupoints possess better association than the asymmetricals. Therefore, by choosing acupoints with better conductivity they will have better communication. This is what we got from our study about the electrical property of the meridians.
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