hello, 
I hope the following questions are not really basic stuff. 
I'm building a connectivity matrix based on gPPI beta-weights and i want to use this matrix to calculate various graph-theory measures. 
my first question is whether i can refer to the beta-weights as edges, representing connection strength between brain regions ? 
my second question is whether or not i need to use fisher's Z transformation on this matrix? 
are there any other important considerations that i need to think about before calculating graph theory measures on the connectivity matrix?