Boĭko V P, Davydova T V
Zh Evol Biokhim Fiziol. 1978 Sep-Oct;14(5):481-5.
Electrophysiological and electron microscopic studies have been made on degeneration in the optic nerve and midbrain tectum after enucleation of the tortoise T. graeca. It was found that intensive degeneration of terminals which follows "dark" type (1/2--1 month after enucleation) corresponds to degeneration of myelinated fibers. Mass degeneration of the "light" type is associated with degeneration of unmyelinated fibers, being observed 1 1/2--2 months after the enucleation. The main bulk of fibers and terminals degenerates at the period of 4--4 1/2 months. Changes in functional characteristics of the evoked potentials (EP) follow morphological ones and consist in an increase of the interval between the stimulus and the peak of EP components, as well as of the decrease of the amplitude of the EP. Within 4--4 1/2 months, both EP components disappear almost simultaneously.
对希腊陆龟眼球摘除术后视神经和中脑顶盖的变性进行了电生理和电子显微镜研究。结果发现，“暗”型变性（眼球摘除后1/2 - 1个月）后终末的强烈变性对应于有髓纤维的变性。“亮”型的大量变性与无髓纤维的变性有关，在眼球摘除后1.5 - 2个月观察到。纤维和终末的主要部分在4 - 4.5个月期间变性。诱发电位（EP）功能特性的变化跟随形态学变化，表现为刺激与EP成分峰值之间的间隔增加，以及EP振幅减小。在4 - 4.5个月内，两个EP成分几乎同时消失。
