【摘要】 目的观察大鼠脑桥核的传入纤维,并探讨与大鼠脑桥核有直接关联的脑区。方法选取健康成年SD大鼠10只,将荧光金导入大鼠脑桥核以逆行追踪脑桥核的传入纤维。用Nissl染色和荧光显微镜观察和脑桥核有直接联系的脑区。结果在大鼠脑第一皮质运动区、扣带、额叶联络皮质、腹侧眶皮质、眶内外侧皮质、丘脑前背侧核、丘脑前腹侧核、薄束核、楔束核、三叉神经脊束核以及双侧的脑桥核、顶盖前区核、缰内侧核、舌下神经前置核等区均发现有荧光金标记细胞。结论脑桥核接受来自第一皮质运动区等多个脑区的传入纤维,这或可作为研究平稳眼跟踪运动机理的切入点。更多还原

【Abstract】 Objective To observe the afferent fibers to pontine nuclei in the rats,and to investigate the encephalic regions directly related to rat pontine nuclei. Methods Ten healthy adult SD rats were selected. Retrograde tracing of the afferent fibers to pontine nuclei was conducted by injection of fluorogold into the pontine nuclei of the rats. Nissl staining and fluorescence microscope were used to observe the encephalic regions directly related to pontine nuclei. Results The fluorogold-labeled cells were observed in the primary motor cortex area,cingulum,frontal association cortex,ventral orbital cortex,medial orbital cortex,lateral orbital cortex,anterior pretectal nucleus,gracile nucleus,cuneate nucleus,spinal trigeminal nucleus,bilateral pontine nuclei,pretectal nuclei,medial habenular nucleus,nucleus prepositus hypoglossi and other areas. Conclusion Afferent fiber connections from various encephalic regions( such as primary motor cortex area) to pontine nuclei are found,which is probably a introduction to the study on smooth pursuit eye movements.更多还原