脑桥臂旁核 (Parabrachialnucleus,PBN)是非灵长类哺乳动物味觉上行的第二级换元站。PBN内的味觉神经元相对集中于脑桥味区 ,后者和中枢内与味觉、摄食有关的核团之间存在着丰富的纤维联系。大部分PBN味觉神经元对多种基本味觉刺激起反应 ,根据最佳刺激 ,PBN味觉神经元可分为NaCl优势、HCl优势、蔗糖优势和奎宁优势反应神经元 Parabrachialnucleus (PBN) is the second-level meta-locus of non-primate mammalian uppers. The taste neurons in PBN are relatively concentrated in the pontine area, and there is abundant fiber connection between the latter and the center and the nucleus related to taste and feeding. Most PBN taste neurons respond to many basic taste stimuli. Based on the best stimuli, PBN taste neurons can be divided into NaCl predominance, HCl predominance, sucrose predominance, and quinine predominant reactive neurons