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一、实验目的 1.观察光热刺激照射兔鼻引起甩头反应作为痛阈指标的意义。 2.观察电针及利血平对兔痛阈的影响。二、实验方法选择健康情况良好的、反应灵敏(第1次测定痛阈在5～6秒以下)的纯种家兔,体重1.65～2.5公斤,雌雄各半为实验动物。实验前在鼻尖部剪去鼻毛,并大致划分为上、下、左、右四个区,涂墨。用兔兜吊在实验架上,
First, the purpose of the experiment 1. Observe the photothermal stimulation of the rabbit nose caused by shake response as a pain threshold of significance. Observe the effect of electroacupuncture and reserpine on the pain threshold of rabbits. 2. Experimental methods Purebred rabbits with good health and responsiveness (the first determination of the pain threshold within 5 to 6 seconds) were weighed between 1.65 and 2.5 kilograms, male and female being half of the experimental animals. Before the experiment, nose hair was cut at the tip of the nose and roughly divided into four zones: the upper, lower, left, and right sides. With a rabbit hung on the test stand,