Glicksman M A
Brain Res. 1980 Apr 21;188(1):53-62. doi: 10.1016/0006-8993(80)90556-9.
The localization of extraocular motoneurons in the rat was investigated by injecting horseradish peroxidase and [125I]wheat germ agglutinin as retrograde tracer substances into individual eye muscles. The organization of subnuclei was found to be most similar to the rabbit. The subgroups representing the medial rectus and inferior rectus muscles are located in the rostral two thirds of the ipsilateral oculomotor nucleus (nIII) with some medial rectus motoneurons scattered laterally along the edge of the medial longitudinal fasciculus. The motor pool controlling the inferior oblique muscle is located in the middle third of the ipsilateral nIII. The motoneurons of the superior rectus muscle are in the caudal two-thirds of contralateral nIII while the levator palpebrae muscle has a bilateral innervation in the oculomotor nucleus. The motoneurons of the superior oblique are located in the contralateral trochlear nucleus although a few labeled neurons were scattered laterally in amongst the fibers of the medial longitudinal fasciculus. The cell bodies of lateral rectus motoneurons are not homogeneously distributed throughout the ipsilateral abducens nucleus. A regional separation between the latter and internuclear neurons was found after injecting HRP into the oculomotor nucleus.
通过将辣根过氧化物酶和[125I]麦胚凝集素作为逆行示踪剂注入大鼠的单个眼肌，研究了大鼠眼外肌运动神经元的定位。发现亚核的组织与兔子最为相似。代表内直肌和下直肌的亚组位于同侧动眼神经核（nIII）的前三分之二，一些内直肌运动神经元沿内侧纵束边缘向外侧分散。控制下斜肌的运动池位于同侧nIII的中间三分之一。上直肌的运动神经元位于对侧nIII的后三分之二，而上睑提肌在动眼神经核中有双侧神经支配。上斜肌的运动神经元位于对侧滑车神经核，尽管在一些内侧纵束纤维中散在分布着少量标记神经元。外直肌运动神经元的胞体在同侧展神经核中分布不均匀。将辣根过氧化物酶注入动眼神经核后，发现展神经核与核间神经元之间存在区域分隔。
