Zabłocka T, Zernicki B
Department of Neurophysiology, Nencki Institute of Experimental Biology, Warsaw, Poland.
Behav Neurosci. 1996 Jun;110(3):621-5. doi: 10.1037//0735-7044.110.3.621.
Four cats deprived binocularly of pattern vision (BD cats), 4 control cats reared also in the laboratory (C cats), and 4 normal wild cats (N cats) were trained to discriminate gratings of progressively smaller difference in orientation. Differences in learning were found only in fine orientation discriminations. The stage of 15 degrees orientation difference was learned by 4 N cats, 2 C cats, and 1 BD cat. After the discrimination training, the superior colliculi were ablated in 2 C cats and 2 BD cats. In contrast to C cats, the BD cats were very deficient and failed to relearn even a horizontal versus vertical orientation discrimination. Thus, an abnormal neural strategy used by BD cats diminished their deficit in grating discrimination learning.
4只双眼剥夺模式视觉的猫（BD猫）、4只同样在实验室饲养的对照猫（C猫）和4只正常的野猫（N猫）被训练区分方向差异逐渐减小的光栅。仅在精细方向辨别中发现学习存在差异。15度方向差异阶段，4只N猫、2只C猫和1只BD猫学会了。辨别训练后，对2只C猫和2只BD猫进行上丘切除。与C猫相比，BD猫非常欠缺，甚至无法重新学会水平与垂直方向的辨别。因此，BD猫使用的异常神经策略减轻了它们在光栅辨别学习中的缺陷。
