Localization by graphvar

Hello every one

i have feature vector 140*139 where 140=nomber of subject and 139=nomber of features , i ranked the featues according their wights 

my qestion how can i know  the roi for example first 15 top features like this paper bellow:

he used the brainnet viewr  .

please i want your advices can i use graphvar or brainetviewr and how can i do that?