The
allocortex (also known as
heterogenetic cortex) is one of the two types of
cerebral cortex, the other being the
neocortex. It is characterized by having just three or four
cell layers, in contrast with the six layers of the neocortex, and takes up a much smaller area than the neocortex. There are three subtypes of allocortex: the
paleocortex, the
archicortex, and the
periallocortex – a transitional zone between the neocortex and the allocortex.