Abbreviation

CTXpl

Species

Rat

Description of part

For about 150 years the adult mammalan cerebral cortex has been divided in histologically distinct areas, which have been grouped in various ways by different researchers. During development the entire cortical mantle displays a cortical plate that may (isocortical) or may not (allocortical) be fitted into a basic six-layered scheme (Vogt and Vogt 1919) numbered 1-6 here. These terms are preferred to the equivalent homotypical and heterotypical of the Vogt's pupil, Brodmann (1909), and to the terms neocortical, archicortical, and paleocortical (Ariens Kaypers 1909), all of which imply unsubstantiated phylogenetic and ontogenetic attributes (see Lorente de No 1934; Ebesson 1980; Swanson 2000b). The olfactory cortex (including superficial parts of the amygdala) and hippocampal formation would form the allocortex, as interpreted here. Until and if it is established how allocortical layers correspond to isocortical layers, traditional ways of naming cortical areas, based on Brodmann's work and ultimately general for all mammals, as been adapted here. For another scheme, idiosyncratic to the rat, see Zilles and Wree (1995). Names of the 6 isocortical layers from superficial to deep, include: 1, molecular layer; 2, superficial supragranular pyramidal layer; 3, deep supragranular pyramidal layer; 4, granular layer; 5, infragranular pyramidal layer; and 6, polymorph layer.

Part type

gray matter

Nomenclature

Swanson-2004

Endorsement

The approach used by the collator Mihail Bota is not endorsed by the author of the nomenclature.

Reference

Cortical plate - Mouse - Dong-2007