Ito H, Kishida R
J Comp Neurol. 1978 Oct 1;181(3):465-75. doi: 10.1002/cne.901810303.
The efferent and afferent pathways of the carp torus longitudinalis were studied by means of degeneration and retrograde HRP methods. Efferent projections were only seen in the most superficial layer of the ipsilateral optic tectum (stratum fibrosum marginale). Afferent pathways to the torus longitudinalis were found to originate mainly in the valvula cerebelli. Degenerating fibers course in the tractus mesencephalocerebellaris posterior within the valvula, and join the tractus mesencephalocerebellaris anterior in the tegmentum. The fibers which ascend in the tract gradually invade the optic tectum through which they are distributed to the torus longitudinalis. The remaining fibers pass through the posterior commissure and terminate in the torus longitudinalis at the rostral end of the tract. Degenerating terminals were also seen in the torus longitudinalis when lesions were made in the optic tectum, tectal commissure, torus semicircularis, and in the area between the valvula and the corpus cerebelli. The possibility of projections from these areas is discussed depending upon the results of the retrograde HRP method.
采用变性法和逆行HRP法研究了鲤鱼纵走束的传出和传入通路。传出投射仅见于同侧视顶盖的最表层（纤维性边缘层）。发现纵走束的传入通路主要起源于小脑瓣。变性纤维在小脑瓣内的中脑小脑后束中走行，并在被盖部与中脑小脑前束相连。在该束中上升的纤维逐渐侵入视顶盖，并通过视顶盖分布到纵走束。其余纤维穿过后连合，终止于该束前端的纵走束。当对视顶盖、顶盖连合、半环形束以及小脑瓣与小脑体之间的区域进行损伤时，在纵走束中也可见到变性终末。根据逆行HRP法的结果，讨论了这些区域发出投射的可能性。
