Pritz M B
J Comp Neurol. 1975 Dec 1;164(3):323-38. doi: 10.1002/cne.901640305.
Nucleus rotundus receives a major input from the optic tectum in crocodiles, Caiman crocodilus. Telencephalic projections of nucleus rotundus were studied in Caiman by means by the Fink-Heimer procedure after anodal, stereotaxic lesions. Efferent axons of nucleus rotundus assemble on the ventromedial aspect of this nucleus and swing ventrolaterally to enter the dorsal peduncle of the lateral forebrain bundle. These ascending fibers continue rostrally in the dorsal peduncle of the lateral forebrain bundle to enter the telencephalon where they remain restricted to a lateral portion of the lateral forebrain bundle. At more anterior levels, these fascicles turn dorsally, pass through the ventrolateral area, and terminate massively in a lateral part of the rostral dorsolateral area. The results of this experiment are compared with similar studies on thalamotelencephalic connections of diencephalic visual areas in other amniotes. Parallels in fiber connections of thalamic auditory and visual areas and the segregation of these modalities in the telencephalon of Caiman are discussed. These similarities in neural circuitry and synaptic elements of auditory and visual systems that synapse in the midbrain of Caiman form the basis for a different interpretation of sensory system organization in amniotes.
在凯门鳄（Caiman crocodilus）中，圆核从视顶盖接收主要输入。通过阳极立体定向损伤后，利用芬克 - 海默法（Fink-Heimer procedure）对凯门鳄的圆核的端脑投射进行了研究。圆核的传出轴突在该核的腹内侧聚集，并向腹外侧摆动进入外侧前脑束的背侧脚。这些上行纤维在外侧前脑束的背侧脚中继续向前延伸，进入端脑，在那里它们局限于外侧前脑束的外侧部分。在更靠前的水平，这些纤维束转向背侧，穿过腹外侧区域，并大量终止于 Rostral 背外侧区域的外侧部分。将该实验结果与其他羊膜动物间脑视觉区域的丘脑 - 端脑连接的类似研究进行了比较。讨论了凯门鳄丘脑听觉和视觉区域纤维连接的相似性以及这些模态在端脑的分离。这些在凯门鳄中脑突触的听觉和视觉系统的神经回路和突触元件的相似性，为羊膜动物感觉系统组织的不同解释奠定了基础。
