视束切断后猫和猴外侧膝状核的细胞变化。

Garey L J, Fisken R A, Powell T P

J Anat. 1976 Feb;121(Pt 1):15-27.

Cellular changes in the lateral geniculate nucleus following section of the optic tract have been studied in adult cats and monkeys. The cats were allowed to survive for periods varying from 20 to 363 days after operation, and the monkeys from 14 to 90 days. No cellular changes were seen in the lateral geniculate nucleus of the cat at survivals up to 120 days. After 200 days, however, there was shrinkage of the cells in all laminae and measurements showed this to be between 20 and 30%. In the monkey shrinkage of cells was found, and was up to 30% after 28 days and 40% after 90 days. The delayed onset of the cellular shrinkage in adult cats resulting from section of the optic tract, as compared with that occurring after eye enucleation (63 days), suggests that even in adult cats there is some degree of 'competition' present between cells of the laminae related respectively to the ipsilateral and contralateral eye.

对视神经束切断术后成年猫和猴子外侧膝状核的细胞变化进行了研究。术后，让猫存活20至363天不等，让猴子存活14至90天。在存活期达120天的猫的外侧膝状核中未观察到细胞变化。然而，200天后，所有板层中的细胞均出现萎缩，测量结果显示萎缩程度在20%至30%之间。在猴子中发现了细胞萎缩，28天后萎缩率高达30%，90天后高达40%。与眼球摘除术后（63天）相比，成年猫因视神经束切断导致的细胞萎缩延迟出现，这表明即使在成年猫中，分别与同侧和对侧眼相关的板层细胞之间也存在一定程度的“竞争”。