LSD Experiment - "Schizophrenia Psychosis Induced by LSD25" 1955 CIA Fun...

"Critically, the researchers showed not only that super-agers had no shrinkage in these brain networks but also that the size of these regions was correlated with memory ability. One of the strongest correlations between brain size and memory was found in an area at the intersection of the salience and default mode networks. Previous research has shown that this region - the para-midcingulate cortex - is an important hub that allows different brain networks to communicate efficiently."
http://medicalxpress.com/news/2016-09-super-aging-older-adults-retain.html

http://www.ncbi.nlm.nih.gov/pubmed/19636589 ? Paracingulate asymmetry in anterior and midcingulate cortex: sex differences and the effect of measurement technique.

http://journal.frontiersin.org/article/10.3389/fnins.2013.00251/full The role of the midcingulate cortex in monitoring others' decisions