These spindle-shaped brain cells, called von Economo neurons—named for the man who first described them—are found only in human beings, great apes and a handful of other notably gregarious creatures .
Von Economo neurons (VENs) are rare cells found in human anterior cingulate cortex. VEN densities do not change throughout aging in individuals with average cognition . “SuperAgers” (age 80+) show higher density of VENs than younger cases (age 20–60).
Bob, I actually had read that elsewhere. The topic fascinated me so I got into reading more materials on it.