Neopallium
Neopallium
Definition
The neopallium (or neocortex) is a subdivision of the cerebral cortex (pallium) characterized by a six-layered histological organization.
It represents the predominant part of the cortex in the cerebral hemisphere and corresponds to the most recently evolved region in phylogenetic terms.
In many mammals, referred to as “lissencephalic,” the neocortex remains simple and smooth. In carnivores and domestic ungulates, as well as in humans, the formation of sulci and the gyri they delimit (“gyrencephalic”) begins after a relatively long period during which the neocortex remains smooth. The first sulci to appear are the deepest and define large territories characteristic of each mammalian order.
References
Barone R, Bortolami R. Anatomie comparée des mammifères domestiques, Tome 6, Neurologie I, Vigot, Paris, 2004.
Evans HE, de Lahunta A. Miller’s anatomy of the dog, 4th edition, Elsevier Saunders, St Louis, 2012.
