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Hello SPMers, I am having difficulties normalizing some fMRI data. The images were acquired on a GE scanner. When i normalize the data, a large chunk of the images, in the three planes, disappears. On the normalization report, a large part of the posterior pole is absent. I have run the data using another software (stimulate) and the data seem allright... Someone told me to crop the images before using SPM to solve the problem. Now i get an error message similar to this one (which i copied from someone else's message Can someone help me? thank you, Hugo Theoret >> smoothing.. ..done iteration: 1 chi2: 0.0386532 Warning: Divide by zero Warning: Divide by zero iteration: 2 chi2: 0 ??? Error using ==> svd NaN and Inf not allowed. Error in ==> /export/home/matlab4_2/toolbox/matlab/matfun/pinv.m On line 14 ==> [U,S,V] = svd(A,0); Error in ==> /export/home/spm96/spm_affsub2.m On line 103 ==> P(qq) = P(qq) + pinv(reshape(alpha(qqq), nf, nf))*beta(qq); Error in ==> /export/home/spm96/spm_sn3d.m On line 683 ==> p1 = spm_affsub2(VG,VF, mg,mf, 1,8, mean0,fr,pdesc,gorder); Error in ==> /export/home/spm96/spm_sn3d.m On line 430 ==> spm_sn3d(P,matname,bb,Vox,[nbasis iterations 8 rglrztn],Template,aff_parms,ones(nap,1)); ??? Error while evaluating callback string. NaN ans = NaN %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%