Dear SPMers, I got ab error when I read fMRI data by using spm image read functions: imfile=spm_select ; v=spm_vol(imfile); imdata=spm_read_vols(v); I have used the commands for long time but this is the first time when I got an error. Could anybody provide tips for these errors? Thank you in advance, Namhee Kim ==== Errors ==== ??? Error using ==> spm_slice_vol File too small. Error in ==> spm_read_vols at 34 Y(:,:,p,i) = spm_slice_vol(V(i),spm_matrix([0 0 p]),V(i).dim(1:2),0); Error in ==> Image2Matrix4D at 10 img = spm_read_vols(vol);