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近年来大量的研究资料表明,在不同种类动物的中枢神经系统各级中枢如丘脑、中脑网状结构和黑质、延髓、脊髓等,普遍存在着对伤害性刺激发生兴奋反应或/和抑制反应的两种神经元,并认为这两种神经元的不同反应都与痛觉的产生有直接关系。我
In recent years a large number of research data show that in different types of animals at all levels of the central nervous system centers such as the thalamus, midbrain reticular formation and the substantia nigra, medulla, spinal cord, ubiquitous activation of nociceptive stimuli or / and inhibition Reaction of the two neurons, and that the different responses of these two neurons are directly related to the production of pain. I