We have unfortunately run into some more problems with our analysis in FSL.
Our study gives us 3 different runs from each subject. Each run lasts for
about 18 minutes, and contains 6 different modes (3 active, 2 baseline, and
pause). From this, we have made 16 different contrasts that should be more
or less interesting.
We have run all the first-level analysis without any problems. Higher lever
analysis runs OK with fixed-effects, but when trying any kind of ME, the
output is always corrupted; we (almost always) get this error:
“ndtri domain error”
Which appears in the log for the higher-level stats, almost in the
beginning. We have searched the online FSL-forum for help regarding this
error, but none of the suggestions there helped us. They suggested that the
first-level analysis could be corrupted, but everything there seems ok. It
also seems strange that the FE should run if data was corrupted.
To further investigate the problem, we have also tried to analyze the
lowest possible amount of data, which is one run from 2 different subjects,
and only one condition (Vanlig-Strek). Still, we get the same error (ndtri
domain error), and no output. So, we think we can exclude hardware as the
source of our problems. We have tried different computers, different
versions of Linux, and different versions of FSL (3.3 and 4.0). Nothing
seems to help.
As a final note, in frustration of all the FSL-errors, we ran the whole
analysis in BrainVoyager, where it went smoothly.....
Anyone got any idea?
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