Editing Cingulate cortex (section)

===Posterior cingulate cortex===
{{main|Posterior cingulate cortex}}
This corresponds to areas 23 and 31 of Brodmann LP of von Economo and Bailey and von Bonin. Its cellular structure is granular. It is followed posteriorly by the retrosplenial cortex (area 29).{{citation needed|date=January 2011}}
Dorsally is the granular area 31. The posterior cingulate cortex receives a great part of its afferent axons from the superficial nucleus (or nucleus superior- falsely LD-{{Citation needed|date=October 2011}}) of the thalamus (see [[thalamus]]), which itself receives axons from the subiculum. To some extent it thus duplicates Papez' circuit. It receives also direct afferents from the subiculum of the hippocampus. Posterior cingulate cortex hypometabolism (with 18F-FDG PET) has been defined in Alzheimer's disease.