Hi, I am working on spatial normalization in spm 2. I would like to know how does one interpret the sn.mat file that is obtained in forward normalization. where is the jacobian matrix located?.... Thanks Aarti Shetty Graduate Student(Phd-Medical Imaging) USC Viterbi School of Engineering Dept. of Biomedical Engineering Los Angeles, CA 90007, USA (323)-841-1864 [log in to unmask]