Dear FSL experts, I have a very basic question. Which is the difference between using VBM and FIRST analysis? I have seen in several studies conducted by VBM that they eithet speak of GM volume or GM density. In another study I found they said that men had more GM volume but less GM density. Could you explain me this? As far as I know, both concepts are totally different. Thank you. Rosalia ######################################################################## To unsubscribe from the FSL list, click the following link: https://www.jiscmail.ac.uk/cgi-bin/webadmin?SUBED1=FSL&A=1