Acupuncture analgesia in rabbits

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Abstract
The validity and reliability of analgesia elicited by acupuncture stimulation in rabbits was demonstrated. Using 21 adult animals 95 experiments were performed. The reaction time of the avoidance response elicited by noxious heat stimulation on the snout, and the presence or absence of the start response elicited by pin-prick and clamping of the skin were studied. Bilateral electric acupuncture stimulation in the area of Tsu-san-li and Shang-chu-hsu points in the hind legs was used. The animals were either held in a soft bag, loosely attached by cords, or suspended in a hammock; the eyes were either free or blindfolded. On the basis of operational behavioral measurements, acupuncture stimulation did not produce analgesia in undisturbed, placid animals. During agitated or fighting periods and the immobility reflex-like state, sometimes associated with acupuncture maneuvers, long reaction times were observed. Pin-pricking and clamping stimulation of the skin were not reliable methods of noxious stimulation in the rabbit.