Dear SPMer's,
We've created a mask image to define a small ROI for a particular
analysis but were having some trouble rendering our results. We used
a 'full-monty' design with no scaling, an overall grand mean of 50, no
implicit masking (oralternately proportional masking at 0.8), and the
explicit mask mentioned above. The analysis seems to go just fine and
we can look at our results perfectly well. Furthermore they match the
results that we see without the mask (the mask is used solely to limit
the area under investigation).
The problem comes when we try to render the results from this
analysis. We consistently get:
>> ??? Bad magic number in image handle.
Error in ==> /usr/local/spm99b/spm_slice_vol.mexaxp
Error in ==> /usr/people4/richard/matlab/spm_render.m
On line 159 ==> X = spm_slice_vol(X0,spm_matrix([0 0 1])*M2,size(rend{i}.dep),hld);
and I can not figure out what's different between this rendering
and other PET analyses which we've rendered. The obvious thing is
the presence of an explicit mask but I don't understand why this
would prevent us from rendering our results. Can anyone shed some
light on this?
Thanks much in advance!
- Joe
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Joseph Devlin, PhD * email: [log in to unmask]
Center for Speech and Language * [log in to unmask]
Experimental Psychology Department *
University of Cambridge * Phone: 01223 766 454
Cambridge, CB2 3EB * Fax: 01223 766 452
England *
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