Dear Freesurfer experts

We have two problems with FS statistics.

One problem occurred when using mri_glmfit:

Matrix condition is 11198.7
ERROR: matrix is ill-conditioned or badly scaled, condno = 11198.7
Possible problem with experimental design:
Check for duplicate entries and/or lack of range of
continuous variables within a class.

I inspected the FSGD file but did not find any error!
There was a suggestion in the FS archives to look at the design matrix for
significant off-diagonal values but the design matrix (X.mat) was not
produced
Any idea where the problem is?

In another contrast the sig.mgh file produced huge values and the whole
brain is colored yellow (see attachment).
What happens here?

Thanks a lot in advance
Best regards
Juergen

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Juergen Haenggi
Ph.D. (Dr. des.)
Division of Neuropsychology
Institute of Psychology
University of Zurich
Binzmuehlestrasse 14, PO Box 25
8050 Zurich, Switzerland
0041 44 635 73 97 (phone office)
0041 76 445 86 84 (phone mobile)
0041 44 635 74 09 (fax office)
BIN 4.D.04 (office room number)
j.haenggi@psychologie.uzh.ch (email)
http://www.psychologie.uzh.ch/neuropsy/ (website)
http://www.juergenhaenggi.ch (private website)
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