Hergueta S, Lemire M, Ward R, Rio J P, Repérant J
Laboratoire d'Anatomie Comparée, Museum National d'Historie Naturelle, Paris, France.
J Hirnforsch. 1992;33(4-5):515-44.
The retinocerebral projections of Emys orbicularis were investigated by means of [3H]-proline or HRP, administered by intraocular injection. Two newly-hatched, two juvenile and seven adult specimens were examined. The results reveal contralateral retinal projections to fifteen sites: two in the hypothalamus (the nuclei suprachiasmaticus and periventricularis), five in the thalamus (the nuclei ovalis, geniculatus lateralis ventralis, geniculatus laleralis dorsalis, dorsolateralis anterior and ventrolateralis), five in the pretectal region (the nuclei geniculatus pretectalis, opticus pretectalis ventrolateralis, lentiformis mesencephali, posterodorsalis and griseus tectalis), two in the optic tectum (the stratum opticum and the stratum fibrosum et griseum superficiale), and one in the tegmentum (the nucleus opticus tegmenti). Ipsilateral projections to nine of these sites at thalamic, pretectal, tectal and tegmental levels, while weak, could be clearly demonstrated. These results differ considerably from those obtained in a previous investigation using a Nauta-paraffin technique; it is suggested that the differences are due to limitations of the latter technique. A review of the existing literature on the Chelonian primary visual system reveals considerable terminological diversity, and a standard nomenclature for the primary visual centres of turtles is proposed.
通过眼内注射[3H]-脯氨酸或辣根过氧化物酶（HRP），对圆鳖（Emys orbicularis）的视网膜-脑投射进行了研究。检查了两只刚孵化的幼体、两只幼龟和七只成体标本。结果显示，视网膜对15个部位有对侧投射：下丘脑有两个部位（视交叉上核和室周核），丘脑有五个部位（卵圆核、外侧膝状体腹侧核、外侧膝状体背侧核、前背外侧核和腹外侧核），顶盖前区有五个部位（顶盖前外侧膝状体核、顶盖前视外侧核、中脑豆状核、后背侧核和灰质顶盖），视顶盖有两个部位（视层和浅纤维灰质层），被盖有一个部位（视被盖核）。在丘脑、顶盖前区、视顶盖和被盖水平，对其中九个部位的同侧投射虽然较弱，但可以清楚地显示出来。这些结果与先前使用Nauta-石蜡技术获得的结果有很大差异；有人认为，差异是由于后一种技术的局限性所致。对龟鳖类初级视觉系统的现有文献进行综述后发现，术语存在相当大的多样性，并提出了龟类初级视觉中枢的标准命名法。
