Herrmann K, Bischof H J
Universität Bielefeld, Fakultät für Biologie, Federal Republic of Germany.
J Comp Neurol. 1988 Nov 1;277(1):141-54. doi: 10.1002/cne.902770110.
The postnatal development of the main neuron type in the ectostriatum, the telencephalic station of the tectofugal pathway, was followed in normally reared and monocularly deprived zebra finches by using the Golgi method. Three parameters were investigated: dendritic field radius, branching index, and spine density. The results show that all three exhibit the same developmental trend--namely, an increase from day 5 until day 20, followed by a subsequent reduction until adulthood (greater than 100 days). Monocular deprivation from birth until day 20, 40, or at least 100 does not seem to interfere with the development of the dendritic field radius or branching index. Clear changes in spine density result from depriving the birds for at least 40 days. In these birds, neurons in the deprived hemisphere bear significantly fewer spines than those in the nondeprived hemisphere, which is mainly due to a lack of normally occurring spine reduction in the nondeprived hemisphere rather than to spine reduction in the deprived hemisphere.
运用高尔基方法，在正常饲养和单眼剥夺的斑胸草雀中，追踪了外纹状体（顶盖离顶盖通路的端脑站）主要神经元类型的产后发育情况。研究了三个参数：树突野半径、分支指数和棘密度。结果表明，这三个参数均呈现相同的发育趋势，即从第5天到第20天增加，随后直到成年期（大于100天）逐渐减少。从出生到第20天、40天或至少100天进行单眼剥夺，似乎并不会干扰树突野半径或分支指数的发育。剥夺鸟类至少40天会导致棘密度发生明显变化。在这些鸟类中，剥夺半球的神经元棘突明显少于未剥夺半球的神经元，这主要是由于未剥夺半球缺乏正常发生的棘突减少，而非剥夺半球的棘突减少。
