Hi Bernie,
I do not know whether this might help you: The problem also occurs when you
unintentionally us different bounding boxes during normaliszation or when
the x-orientation is different in your images. The second can be checked by
looking on the x dimension in the header file. If the dimension is negative,
your images were flipped. This might happen when you unintenionally use
diffrent default files for different subjects.
Good luck,
Peter
--
PD Dr. Peter Kirsch
Head, Cognitive Neuroscience Group
Center for Psychiatry and Psychotherapy
Justus-Liebig-University Giessen
-----Ursprüngliche Nachricht-----
Von: SPM (Statistical Parametric Mapping) [mailto:[log in to unmask]] Im
Auftrag von Bernie Caessens
Gesendet: Montag, 6. Juni 2005 15:27
An: [log in to unmask]
Betreff: [SPM] 2nd level analysis con_* problem
Dear spm'ers
We have just encountered a for us mind boggling problem (error message) in
setting up a second level analysis. We have 6 conditions, all contrast
images for 8 subjects. We then enter these for 6 groups in a one-way anova.
Our settings are like this:
Global scaling NO
Explicit masking NO
Tresholding NO
non-sphericity YES
replications over repl (8)
correlated repeated measures YES (or even no it does not matter)
Then, every time again, spm_spm_ui bails out with the error message image
orientation & voxel size are not the same
We have been through the list, and understand this problem when entering
data from unresliced images, at the 1st level, but it is our understanding
that the con_ images should all be in the same orientation? Or is this
wrong? However, we checked ALL of the con images with the display command,
and they all have the exact same origin and voxel coordinates (2 2 2) !!! So
they should be right in place no?
Any hints/help would be grately appreciated.
Kind regards,
Bernie Caessens,
Dept. of Exp. Psychology &&
Ghent Institute for Functional Magnetic Imaging (GIfMI)
Ghent University, Belgium
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