摘要
损伤了14只成年猫的不同皮质区后,用改进的Nauta法追踪皮质传出纤维向前庭神经核的投射。终于前庭神经核群的大部分纤维起源于大脑皮质的躯体感觉Ⅰ区,不多的纤维发自运动区,少量纤维起自前庭区和躯体感觉Ⅱ区。未观察到有从听和视皮质至前庭核群的纤维。皮质前庭纤维下降在锥体束中,在脑桥高度这些纤维离开锥体到达双侧前庭神经核,到本侧的纤维较多。变性纤维弥散地分布于前庭各核的全长,其总数不多。讨论了皮质前庭联系的解剖及机能意义。
Lesion was made individually to the verious cortical areas in 14 adult cats.Thecorticofugal fibers terminating into vestibular nuclei were traced in sections by meansof modified Nauta silver staining method.The majority of cortical efferents which terminated to the vestibular nuclei deri-ved from somato-sensory areaⅠ.A few fibers originated from the cortical motorareas,and some fibers derived from vestibular area and somatosensory areaⅡ.Thefibers originated from the visual and auditory areas were not observed.The corticovestibular fibers descended within the pyramidal tract.These fibersleft pyramidal tract at the level of pons.Then,most of them reached to the vesti-bular nuclei ipsilaterally,and others reached bilaterally.Terminal degeneration was present throughout the whole extent of the vestibularnuclei.The total number of preterminal degenerating fibers in the nuclei was small.The anatomical and functional significance of our findings are discussed.
作者
宫敬忠
郗瑞生
Gong Jingzhong;Xi Ruisheng(Department of Human Anatomy,Lanzhou Medical College)
出处
《解剖学报》
CAS
1983年第1期71-76,121,共7页
Acta Anatomica Sinica
