Figure 4. The structural equation modeling of the relation among white matter, grey matter and cognition. COG= Cognitive Tests; GM=gray matter; WM=white matter; ORB_L= left medial orbital superior frontal gyrus; ACG_L=left anterior cingulate and paracingulate gyrus; MD_SLF= the mean diffusivity of the SLF.temporal part; SCWT-A=Stroop Color and Word A Test; TMT-B=Trail Making B Test.