Cabrera B, Portillo F, Pásaro R, Delgado-García J M
Department of Animal Physiology, Faculty of Biology, Sevilla, Spain.
Neurosci Lett. 1988 Apr 22;87(1-2):1-6. doi: 10.1016/0304-3940(88)90135-8.
The distribution of abducens motoneurons and internuclear neurons was determined in the rat by injections of horseradish peroxidase or fluorochromes into the ipsilateral lateral rectus muscle and the contralateral oculomotor nucleus either separately or simultaneously. The labeled somata of abducens internuclear neurons were intermingled with the labeled motoneurons at the medial third of the nucleus, but they were more segregated at the rostral third, where the labeled interneurons were more numerous. Internuclear neurons were preferentially located around and ventral to the central part of the facial genu, while motoneurons were located more dorsomedially, closer to the midline than in other species of mammals. The evolutionary trend of the location of both populations of neurons is also discussed.
通过分别或同时向同侧外直肌和对侧动眼神经核注射辣根过氧化物酶或荧光染料，确定了大鼠展神经运动神经元和核间神经元的分布。展神经核间神经元的标记胞体在核内侧三分之一处与标记的运动神经元相互交织，但在吻侧三分之一处更分散，此处标记的中间神经元更多。核间神经元优先位于面神经膝部中央部分的周围和腹侧，而运动神经元则位于更靠背内侧，比其他哺乳动物更靠近中线。还讨论了这两种神经元群体位置的进化趋势。
