Kaplan E, Chino Y M, Shansky M S
Exp Brain Res. 1984;56(2):235-42. doi: 10.1007/BF00236279.
We investigated quantitatively the receptive-field properties of neurons in the lateral geniculate nucleus of Siamese cats. The experimental animals, "Mid-western" Siamese cats, exhibited varied degrees of ocular misalignment. The percentage of Y-cells, which receive projections from the area centralis, was significantly greater in Siamese cats than in normally pigmented cats. The spatial resolution of many, but not all, X-cells within the central 5 degrees of Siamese cats was reduced. A substantial number of Y-cells had significantly longer latencies to stimulation of the optic chiasm. In addition, some Siamese cat units had abnormal contrast threshold and lineweighting functions along with large receptive field center size and weak inhibitory effects from the RF surround. Finally, large variability was found with respect to the abnormalities among cells within a given cat and more importantly among the individual Siamese cats which we studied.
我们定量研究了暹罗猫外侧膝状核中神经元的感受野特性。实验动物为“中西部”暹罗猫，表现出不同程度的眼球错位。接受来自中央凹投射的Y细胞百分比，暹罗猫显著高于正常色素沉着的猫。暹罗猫中央5度范围内许多（但并非全部）X细胞的空间分辨率降低。大量Y细胞对视交叉刺激的潜伏期明显更长。此外，一些暹罗猫神经元具有异常的对比度阈值和线条加权功能，同时感受野中心尺寸较大，且来自感受野周围的抑制作用较弱。最后，在给定的猫的细胞之间，更重要的是在我们研究的个体暹罗猫之间，发现这些异常存在很大差异。
