Tuesday, June 9, 2009


The allocortex is a part of the cerebral cortex which have fewer neurons layers (fewer than six) than the isocortex, or neocortex. The regions of the cerebrum that are described as part of the allocortex are: 1) the olfactory cortex, which mediates olfaction; 2) the hippocampus, which mediates limbic input.

The allocortex is also referred to as the "heterotypic cortex." Phylogenetically, the allocortex is the oldest part of the cerebral cortex.