将荧光金注入单侧大鼠延髓网状背侧亚核进行该部位的传入投射研究。结果发现：在脊髓后角Ⅰ层、Ⅲ～Ⅳ层、Ⅹ层背侧有阳性标记细胞；中缝大核、线性核、中缝背核、中脑导水管周围灰质、丘脑室旁核等均有较多的标记细胞。表明延髓网状背侧亚核与内源性镇痛系统和脊髓之间有广泛的联系，提示该核与痛觉调节活动有关。 Fluorescent gold was injected into the unilateral rat medullary reticular dorsal subnuclear afferent projection study. The results showed that: in the posterior horn of spinal cord I, Ⅲ ~ Ⅳ layer, Ⅹ layer dorsal positive marker cells; large nucleus, linear nucleus, dorsal raphe, midbrain periaqueductal gray, More labeled cells. Suggesting that there is a broad association between the medullary reticular subnuclear nuclei and the endogenous analgesic system and the spinal cord, suggesting that the nucleus is associated with pain-regulating activity.