INHIBITION OF SYMPATHETIC NERVOUS SYSTEM BY ACUPUNCTURE

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Abstract
The central and peripheral sympathetic activities were measured both physiologically and biochemically in either human subjects or conscious rabbits. Acupuncture reduced NE [norepinephrine] levels in perfusates of certain brain areas as well as in blood circulation, accompanied with a rise of pain threshold and changes of certain physiological indices (palm temperature, fingerplethysmogram and pain tolerance threshold) which are related with functions of sympathetic nervous system. The NE neurons of NE ascending dorsal fasciculus may have some antagonizing effect on acupuncture analgesic effect. Acupuncture may inhibit sympathetic activities, with such inhibition playing a favorable role in acupuncture analgesia.

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