Fiebig E, Ebbesson S O, Meyer D L
Cell Tissue Res. 1983;231(1):55-72. doi: 10.1007/BF00215774.
Injections of horseradish peroxidase into the optic tectum of the piranha resulted in retrograde transport to the following structures bilaterally: the central telencephalic nucleus, four hypothalamic nuclei, the caudal part of the dorsomedial optic nucleus, the ventral nucleus of the torus semicircularis, the torus longitudinalis, the perilemniscal nuclei, the reticular formation, and a tentatively identified locus coeruleus. In addition, labeled cells were found unilaterally in the contralateral tectum and in the medial octavolateralis nucleus, the ipsilateral thalamic portion of the dorsomedial optic nucleus, the corpus geniculatum laterale ipsum, the pretectal nucleus, the nucleus corticalis, the dorsal nucleus of the torus semicircularis, and the nucleus isthmi. Efferent projections of the optic tectum appeared identical to those reported in Holocentrus (Ebbesson and Vanegas 1976).
将辣根过氧化物酶注射到食人鱼的视顶盖中，导致其逆行运输到以下双侧结构：终脑中央核、四个下丘脑核、背内侧视核的尾部、半规管隆起腹侧核、纵隆起、围髓核、网状结构以及一个初步确定的蓝斑。此外，在对侧顶盖、内侧八叠体外侧核、背内侧视核的同侧丘脑部分、外侧膝状体本体、顶盖前核、皮质核、半规管隆起背侧核和峡核中单侧发现了标记细胞。视顶盖的传出投射似乎与在Holocentrus中报道的那些相同（埃贝松和瓦内加斯，1976年）。
