丘脑后核群在痛觉感受中的作用

<正> 丘脑是多种特异感觉的投射区,是感觉的重要驿站。近年来,很多学者认为丘脑后核群(或丘脑后核复合体)Posterio r Nucleus Group of the Thalamus(简称 PO)在痛觉感受中有重要作用,是传导及调制痛觉信号的重要中枢。国外,在 PO 感受躯体伤害性刺激方面,已积累了大量材料。

THE FUNCTION OF POSTERIOR GROUP OF NUCLEI IN THALAMUS ON RECEPTION OF PAIN SENSATION

Recently it was supposed by many researchers that posterior group of nuclei in thalamus(PO)took important role in reception of pain sensation. However,there were some controversy among researchers over topograghy, classification and function of the subnuclei in PO. In this reriew,topography of the PO,the connection of PO with somatic and visceral afferent nerve fibers,the connection of PO with cortex,especially the secondary sensory area and the characteristics of noxious neurons in PO were summarized. All in all,PO in thalamus was referred to as important integrative cen- ter of pain sensation.