Hi,
I would definitely recommend to present some results
corrected for multiple comparisons, rather than going
for any voxel number threshold in your uncorrected
maps.
It looks like you have a lot of significant
uncorrected results for p<0.005, so I am quite
surprised you do not obtain anything with the
cluster-based correction.
What t threshold have you used in your randomise
option -c? You may have chosen a too stringent level.
I would therefore suggest to look at your tstat maps
to find out which -c would seem reasonable to enter...
Best,
Gwenaelle
--- bs Jeong <[log in to unmask]> a écrit :
> Dear FSLer
>
> I did TBSS analysis.
> But I did not any significant difference between
> groups in cluster level.
> So I'd rather find something in tbss_vox_stat with p
> value or tbss_tstat
> with t value.
> Problem is that so many regions are showed as
> difference btw group even
> though 1-p value is thresholded with 0.9949.
> Is there any method to threshold with consecutive
> voxel number?
>
> Thanks,
>
> bsjeong
>
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