I have a difficulty with my fMRI analysis.
Data of 12 subjects are in question, in a study involved with affective
aspects of touch.
I have used check-registration on the various pre-processing stages and
registration looks good. However, when viewing activity for individual
subjects (or group analysis) there seems to be a systematic shift or skew in
the data; forward and up, generally. It is clear that the activity is not
properly aligned with the template. I don't know what preprocessing looks
fine, but the .mat files are clearly bugged. Data of each subject seems to
be shifted to the same degree.
This is all in SPM5. My colleague has performed the analysis in SPM2 and it
looks great compared to mine. Does anyone have any hints as to where I
should look for the problem?
Thanks
Amy, Oxford
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