It looks as though there is something wrong with your PPI regressor. The PPI regressor
should look all jagged (high frequency) like the PHYS regressor, but yours looks quite
smooth, like your PSY regressor. In fact it looks very similar to our PSY regressor, which is
probably why you can't now find activity related to your PSY regressor (hence no blobs for
your main effect of PSY).
I think something went wrong in generating your PPI. Did you do this from the interaction
button in Feat?
Jill
|