Hi.
> I looked at zstat.img and indeed the values were very low. I did find some
> spurious voxels with Z's larger than 2.3, (for example, the one report.html
> shows a time plot for (Z=4)).
Some voxels have passed the first part of the cluster-based thresholding
(eg above >2.3) but then the resulting clusters fail the probability test
(eg is P<0.01) because they are not large enough. If you had chosen
resel-based thresholding instead of cluster-based you may have found a
little activation, but in this case the required Z threshold (derived from
the voxel-level P which you set) will be greater than 2.3 probably.
> Certainly the experiment is no good. But, just out of curiosity, why were
> these voxels not pointed out, even when FEAT is set to no thresholding?
you get the time plot for max Z but no colour overlay because no clusters
survived thresholding and no average timecourse for the same reason.
when FEAT is set to no thresholding that automatically carries through to
no colour overlay because no "activation" has been defined.
Thanks, Steve.
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