Tremblay F, Ptito M, Lepore F, Miceli D, Guillemot J P
Groupe de Recherche en Neuropsychologie, Université du Québec à Trois-Rivières.
J Hirnforsch. 1987;28(5):491-503.
In this experiment we studied the distribution of callosal cells in various visual cortical areas of both common and siamese cats using the HRP method. The results showed that the most notable difference between the two strains concerned the primary visual areas. Indeed, labeling in areas 17 and 18 was significantly lower in siamese cats and only a few scattered cells were encountered at the 17/18 border. In general, the number of callosal cells forming interhemispheric connections within areas 17, 18 and the 17/18 border was dramatically reduced in the siamese. For all other visual areas (19, lateral suprasylvian subdivisions, 20 a, b and 21 a, b) the distribution was comparable for both species. A study of the laminar distribution indicated that, for common and siamese cats, medium and large pyramidal cells were mainly concentrated in layers III and IV whereas in deeper layers we found a mixture of small pyramidal and fusiform neurons.
在本实验中，我们使用辣根过氧化物酶（HRP）法研究了普通猫和暹罗猫不同视觉皮层区域胼胝体细胞的分布。结果表明，这两个品系之间最显著的差异在于初级视觉区域。实际上，暹罗猫17区和18区的标记明显较少，在17/18边界处仅遇到少数散在的细胞。一般来说，暹罗猫中在17区、18区以及17/18边界内形成半球间连接的胼胝体细胞数量显著减少。对于所有其他视觉区域（19区、外侧上薛氏回亚区、20a、b区和21a、b区），两个物种的分布相当。层状分布研究表明，对于普通猫和暹罗猫，中型和大型锥体细胞主要集中在III层和IV层，而在更深的层中，我们发现有小型锥体细胞和梭形神经元的混合。
