Gstoettner W, Burian M, Zundritsch R, Mayr R
Department of Otorhinolaryngology, University of Vienna, Austria.
Neurosci Lett. 1991 Jan 28;122(2):163-6. doi: 10.1016/0304-3940(91)90848-n.
Previous tracer studies have revealed the sacculus to be connected to the vestibular and cochlear nuclei in the guinea pig. Due to its own innervation pattern, an anterior and posterior part of the sacculus can be distinguished. The present study investigated whether the two parts differ concerning their fiber contribution to the vestibulo-cochlear projection. After tracing the nerve of the posterior sacculus with horseradish peroxidase (HRP), the vestibulo-cochlear fibers were clearly recognizeable and showed distinct terminal labeling within the cochlear nuclei. In contrast, no terminals were identified in the cochlear nuclei after tracing the anterior sacculus. These results may further substantiate the guinea pig vestibulo-cochlear projection as a central pathway for saccular acoustic sensation.
以往的示踪研究表明，豚鼠的球囊与前庭核和耳蜗核相连。由于其自身的神经支配模式，可以区分球囊的前部和后部。本研究调查了这两个部分在前庭蜗投影的纤维贡献方面是否存在差异。在用辣根过氧化物酶（HRP）追踪后球囊的神经后，前庭蜗纤维清晰可辨，并在耳蜗核内显示出明显的终末标记。相比之下，在前球囊追踪后，在耳蜗核中未发现终末。这些结果可能进一步证实豚鼠前庭蜗投影是球囊听觉感受的中枢通路。
