Hello,
I just read through this entire thread, whew!. One point which I feel is
important
but was not mentioned relates to whether or not a region of interest was
scanned. At the group level a group wise mask of all included voxels is
created. This shows all the signal dropouts for all subjects.
I would find it interesting if reserachers reported how much of a
"sensitive to dropout" region was actually included in the analyses. The
report of no task related signal change could be due to no signal change or
the fact that one subject had more dropout than others and eliminated this
ROI from the group level analyses.
best regards,
Jason.
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