Distribution of visual callosal projection neurons in the siamese cat: an HRP study.

F. Tremblay, M. Ptito, F. Lepore, D. Miceli, J. P. Guillemot

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12 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)491-503
Number of pages13
JournalJournal für Hirnforschung
Volume28
Issue number5
Publication statusPublished - 1987
Externally publishedYes

ASJC Scopus Subject Areas

  • General Neuroscience

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Tremblay, F., Ptito, M., Lepore, F., Miceli, D., & Guillemot, J. P. (1987). Distribution of visual callosal projection neurons in the siamese cat: an HRP study. Journal für Hirnforschung, 28(5), 491-503.