PMID: 6167314Jun 29, 1981Paper

Cortical projections to visual centres in the rat: an HRP study

Brain Research
A SEFTONL J Cottee

Abstract

We have investigated the relationships of the visual cortex to other visual centres in the rat: namely the lateral geniculate nucleus, the visually responsive part of the thalamic reticular nucleus and the superior colliculus. We injected horseradish peroxidase iontophoretically so as to restrict the injectate to each of the regions, and reacted sections using 3 different procedures. Areas 17, 18 and 18a project to both dorsal and ventral lateral geniculate nucleus as well as to the visually responsive part of the thalamic reticular nucleus and superior colliculus. Pyramidal cells in lamina VI project to the dorsal lateral geniculate nucleus and to the thalamic reticular nucleus, whereas cells of origin of the projection to the superior colliculus lie in lamina V; cells in lamina V also project to ventral lateral geniculate nucleus. The implications of these findings are discussed, particularly in terms of the functional relationships between the visual cortex, lateral geniculate nucleus and visual thalamic reticular nucleus.

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Citations

Jun 1, 1985·Journal of Neurocytology·P T Ohara, A R Lieberman
Mar 18, 1982·Brain Research·S K Itaya, G W van Hoesen
Aug 31, 1995·Mechanisms of Ageing and Development·R RamosI Pérez de Vargas
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Sep 1, 1992·Journal of Neurobiology·M Götz, J Bolz
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Nov 1, 1985·The Journal of Comparative Neurology·C Matute, P Streit
Oct 10, 1981·The Journal of Comparative Neurology·A G Pettigrew
Dec 1, 1993·The European Journal of Neuroscience·P De WeerdG A Orban

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