Even though, in 1895, Durville managed to prove the“centres nerveux”, and their relationship to internal organs by electrical stimulation of the scalp, the attempts to explain the acupuncture mechanism were reduced to using electrical machines for searching points, and stimulation for therapy. The phenomenon of the diagnosis of the pulse and its origin could not be approached.
For thousands of years, th e existence of the meridians has been known in the Far East; the discovery of a method of measuring them was reserved to the Japanese Nakatani, who, unfortunately, deceased prematurely. He succeeded in it in 1950 at Kyoto University when making electrical researches on the resistance of the skin.
In order to exclude the differences of humidity of the dif ferent skin areas, Nakatani used an electrode, into which was tamped surgical cotton immersed in 30%isopropyl alcohol.
Indep endent of hair follicles, and sweat glands, Nakatani found points at 21volts and 200μA, which correspond to the points known in acupuncture.
He called these points“Ryodoten”=Electropermeable Points (EPP). When reducing the tension to 12V, he met less points which were found to depend on a pathological reflex of the autonomic nervous system, and which referred to pathological alterations of the body. Nakatani supposed that this phenomenon depends on biochemical reactions. The discovery of the endogene opiates approved this theory.
The corresponding points were called“Hanno Ryodo ten”=Reactive Electropermeable Points (REPP).
By connec ting the EPP they obtained the meridians we know, and which the former director of the physiological institute of Kyoto Universitiy, Professor Sasagawa calls“Ryodoraku”=highly electroconductive lines. Under this name, this measuring method became world-famous.
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