Research Group of Acupuncture Anesthesia and Channel, Guangxi College of Traditional Chinese Medicine
In order to investigate the underlying mechanism of ear-acupuncture we made some studies on PSC which was induced by stimulation of ear-points. Two normal marked PSC adults were observed.
Results:
1. Most PSC, induced by stimulating the ear-points, began from the auricle and travelled along certain course to the start or end points of the channel which was named identically with the ear-points acupunctured, then it propagated throughout the whole length of the channel. Sometimes it began from the part of the corresponding channel adjacent to the ear thus propagated towards the Jings. There was no connection between the ear and the start part of the channel. The courses of ninety induced PSC out of 104 examinations had special correspondence with the stimulating sites of the auricle (86.5%) and the rest 14 times were uncertain, whether along the same named channel or the exterior-interior channels and even irrelevant channels. Stimulation of a definite visceral point might evoke a PSC of either the corresponding channel or an irrelevant channel and reversely a same PSC might be elicited by stimulation of different visceral areas of the auricle. It can be concluded that the specificity of the correspondency of the PSC and the auricular visceral area is really relative.
The characteristics of PSC evoked by auricular stimulation such as the sensation, velocity, association with sense organs and viscera reaching the affected area and blockability and so on are as same as the ordinary PSC.
2. The wave form of the rheodigitogram changed apparently when the PSC had arrived on the finger but there was none upon the adjacent fingers. Along the course of the PSC the pain threshold increased while tested with potassium iontophoresis, and the difference was very significant compared with the value before arrival of the PSC (P<0.005).
The hypalgesic zone manifested itself as a numb strip. Sometimes muscular twitchings occurred along the course of the PSC, even the entire limb trembled, and electromyogram might be present occasionally. These phenomena mentioned above could be all blocked by mechanical pressing.
It can be supposed depending the events mentioned above that certain association exists between the earpoints and the channel. The various efficacies produced by stimulating ear-points may be accomplished by the corresponding PSC, and it is difficult to be explained with the action of the peripheral nerves only.
In order to investigate the underlying mechanism of ear-acupuncture we made some studies on PSC which was induced by stimulation of ear-points. Two normal marked PSC adults were observed.
Results:
1. Most PSC, induced by stimulating the ear-points, began from the auricle and travelled along certain course to the start or end points of the channel which was named identically with the ear-points acupunctured, then it propagated throughout the whole length of the channel. Sometimes it began from the part of the corresponding channel adjacent to the ear thus propagated towards the Jings. There was no connection between the ear and the start part of the channel. The courses of ninety induced PSC out of 104 examinations had special correspondence with the stimulating sites of the auricle (86.5%) and the rest 14 times were uncertain, whether along the same named channel or the exterior-interior channels and even irrelevant channels. Stimulation of a definite visceral point might evoke a PSC of either the corresponding channel or an irrelevant channel and reversely a same PSC might be elicited by stimulation of different visceral areas of the auricle. It can be concluded that the specificity of the correspondency of the PSC and the auricular visceral area is really relative.
The characteristics of PSC evoked by auricular stimulation such as the sensation, velocity, association with sense organs and viscera reaching the affected area and blockability and so on are as same as the ordinary PSC.
2. The wave form of the rheodigitogram changed apparently when the PSC had arrived on the finger but there was none upon the adjacent fingers. Along the course of the PSC the pain threshold increased while tested with potassium iontophoresis, and the difference was very significant compared with the value before arrival of the PSC (P<0.005).
The hypalgesic zone manifested itself as a numb strip. Sometimes muscular twitchings occurred along the course of the PSC, even the entire limb trembled, and electromyogram might be present occasionally. These phenomena mentioned above could be all blocked by mechanical pressing.
It can be supposed depending the events mentioned above that certain association exists between the earpoints and the channel. The various efficacies produced by stimulating ear-points may be accomplished by the corresponding PSC, and it is difficult to be explained with the action of the peripheral nerves only.
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