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Dear Lasse, Are you talking about the white line that can be observed through the origin in the MIP display, that appears for example in the "result.jpg" file attached to this post on the SPM list: https://www.jiscmail.ac.uk/cgi-bin/webadmin?A2=ind0804&L=SPM&P=107550 ? If so, then this is a bug in spm_project that has already been fixed for SPM8. It is just a visualisation bug so your possibilities are (i) wait for the next update of SPM5 or (2) get SPM8 and copy all spm_project.* from SPM8 to SPM5. Hopefully, the MIP display should be fine afterwards. Best regards, Guillaume. Lasse Bang wrote: > I have some issues regarding the glass brain visualization in SPM5. I have > run a blocked design fMRI experiment, and done all the pre-processing > steps. 36 axial slices and about 280 volumes were acquired for each > participant (total 8) > > The problem arise when I look at the results (fixed effects for each > participant): the glass brain visualization looks normal except there is a > thin slice of data missing in both the sagittal and coronal views, going > through the whole brain horizontally. This whole slice is white, e.g. > missing data. However, when I use the display - overlay function, the > activation map is complete. > > I have checked the raw data, and the image files after each pre-processing > step. Up until the smoothing step (which is the last pre-processing step I > did), each participants functional data looks good (using the check-reg > function). > Also, when I import another dataset from a different experiment, the > glass-brain visualization of the results looks ok. > > It seems to me that there is something with the glass-brain that is wrong, > since the overlay picture is ok. How can the two be different, don't they > use the same data (beta-weighted images) to display the results? Does > anyone know the source of this problem, and how to fix it? I guess it > doesn't matter since my data and results look good, but it is annoying not > being able to visualize the data using the glass-brain. > > -Lasse -- Guillaume Flandin, PhD Wellcome Trust Centre for Neuroimaging University College London 12 Queen Square London WC1N 3BG