Mori Y, Tokita T, Miyata H
Department of Otorhinolaryngology, Gifu University School of Medicine, Japan.
Acta Otolaryngol Suppl. 1991;481:230-3. doi: 10.3109/00016489109131388.
The labyrinthine-spinal reflexes are influenced by the inputs from the cervical and lumbal propriocepters. We studied the afferent route by the retrograde WGA-HRP method in cats. After the injection of WGA-HRP into either the dorsal or the ventral Deiters' nucleus, labeled neurons were investigated in the spinal cord, the cerebellum, the contralateral vestibular nucleus complex and the brain stem nucleus. In this paper, we report the results in the spinal cord of cats. i) When WGA-HRP was injected into the dorsal Deiters' nucleus, labeled neurons in the spinal cord were found mainly extending from the cervical to the lumbosacral area of the spinal cord. A number of labeled cells were located predominantly in the contralateral cervical segments, while a small number of labeled cells was found ipsilaterally in the lumbosacral segments. ii) In the case of the ventral Deiters' nucleus, labeled neurons were found extending from the cervical to the upper thoracic area of the spinal cord. Localization of labeled neurons in the spinal cord was limited mainly to Rexed's laminae VII and VIII. These results suggest that the afferent fibers from the spinal cord to the Deiters' nucleus are closely related to the labyrinthine-spinal reflex.
迷路-脊髓反射受来自颈段和腰段本体感受器传入信号的影响。我们采用逆行WGA-HRP法在猫身上研究了传入通路。将WGA-HRP注入背侧或腹侧代特氏核后，对脊髓、小脑、对侧前庭核复合体和脑干核中的标记神经元进行了研究。在本文中，我们报告猫脊髓的研究结果。i) 当将WGA-HRP注入背侧代特氏核时，脊髓中标记神经元主要分布于脊髓颈段至腰骶段。大量标记细胞主要位于对侧颈段，而少量标记细胞位于同侧腰骶段。ii) 在腹侧代特氏核的情况下，标记神经元分布于脊髓颈段至上胸段。脊髓中标记神经元的定位主要局限于 Rexed板层VII和VIII。这些结果表明，从脊髓到代特氏核的传入纤维与迷路-脊髓反射密切相关。
