Fig. 5
From: The left frontal cortex supports reserve in aging by enhancing functional network efficiency
Hypothetical working model of reserve. Education is associated with higher efficiency (i.e., small-worldness) of functional brain networks, which is in turn associated with better cognitive performance. The association between education and functional network efficiency is mediated by the left frontal cortex (LFC) hub region (yellow sphere) that modulates the efficiency of downstream networks