Thalamo-telencephalic connections: new insights on the cortical organization in reptiles

Brain Research Bulletin
Salvador Guirado, José Carlos Dávila

Abstract

Tracer injections into the dorsal tier of the lacertilian dorsal thalamus revealed an extensive innervation of the cerebral cortex. The medial cortex, the dorsomedial cortex, and the medial part of the dorsal cortex received a bilateral projection, whereas the lateral part of dorsal cortex and the dorsal part of the lateral cortex received only an ipsilateral thalamic projection. Thalamocortical fibers were found superficially in all cortical regions, but in the dorsal part of the lateral cortex, varicose axons within the cellular layer were also observed. The bilateral thalamocortical projection originates from a cell population located throughout the dorsolateral anterior nucleus, whereas the ipsilateral input originates mainly from a rostral neuronal subpopulation of the nucleus. This feature suggests that the dorsolateral anterior nucleus consists of various parts with different projections. The dorsal subdivision of the lateral cortex displayed hodological and topological (radial glia processes) features of a dorsal pallium derivative. After tracer injections into the dorsal cortex of lizards, we found long descending projections that reached the striatum, the diencephalic basal plate, and the mesencephalic tegmentum, whic...Continue Reading

References

Dec 1, 1978·The Journal of Comparative Neurology·A H Lohman, I van Woerden-Verkley
Jul 15, 1989·The Journal of Comparative Neurology·P V Hoogland, E Vermeulen-Vanderzee
Jan 1, 1986·The Journal of Comparative Neurology·A M GoffinetC Pieau
Nov 10, 1984·The Journal of Comparative Neurology·L L Bruce, A B Butler
Oct 24, 2000·The Journal of Comparative Neurology·J C DávilaL Puelles

❮ Previous
Next ❯

Citations

Sep 8, 2005·Brain Research Bulletin·András Csillag, Catherine M Montagnese
Jul 26, 2012·Zhurnal evoliutsionnoĭ biokhimii i fiziologii·M G BelekhovaT V Chudinova
Mar 12, 2005·Brain, Behavior and Evolution·Dantong ZhuJoyce Keifer
Jan 10, 2016·Journal of Chemical Neuroanatomy·Luis PuellesJohn L R Rubenstein
Sep 29, 2004·The Journal of Comparative Neurology·Nerea Moreno, Agustín González
Apr 9, 2008·The Journal of Comparative Neurology·Frédéric LabergeGerhard Roth
Oct 14, 2003·The Journal of Comparative Neurology·Nerea Moreno, Agustín González
Jun 2, 2006·The Journal of Comparative Neurology·Gema HuesaJulián Yáñez
Jan 27, 2015·Current Biology : CB·Francisco M OcañaSten Grillner
Dec 28, 2021·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Paul Cisek

❮ Previous
Next ❯

Related Concepts

Related Feeds

Basal Ganglia

Basal Ganglia are a group of subcortical nuclei in the brain associated with control of voluntary motor movements, procedural and habit learning, emotion, and cognition. Here is the latest research.