Bien sur il y a un substratum anatomique à la performance mnésique...

"We identified octogenarians and nonagenarians with superior
memory function compared to their age-matched cognitively
normal peers and found anatomic features associated with
SuperAging that deviated from those associated with normal
cognitive aging. The SuperAgers showed significantly
greater cortical thickness and volume than their cognitively
normal age-matched peers and showed no significant cortical
atrophy when compared to younger, cognitively intact individuals
20–30 years younger (50- to 65-year-olds). These
findings are remarkable given the numerous reports that grey
matter loss is a common, if not universal, part of normal
aging (Drachman, 2006; Fjell et al., 2006; Salat et al., 2004)."


I totally agree!

http://journals.cambridge.org/action/displayAbstract?aid=8656556