Hi
well, possible given that you're doing a random effects analysis. Even
if most of these contain 'activation' at the single level that doesn't
imply that the RFX group map will show significant voxels too.
WRT unthresholded maps: look in the BLAH.gfeat/copeX.feat/stats/ for
the unthresholded higher-level zstat maps for each of the copes
ta
christian
On Tuesday, Jun 24, 2003, at 11:36 Europe/London, Andy Myers wrote:
> Hello,
>
> I have got my 8 runs of data that the higher level analysis said there
> was
> no mean activation on, and looked at the same voxel in standard space
> across
> the runs and there is defintely activation in the same areas a large
> percentage of the time, so i cant work out why the higher level
> anaysis has
> absolutely no activation in it at all. am i feeding in the right cope?
> i
> give feat the 8 cope3 images from the feat stats directort, should i do
> anything to these first such as standardise them or something, or is
> there a
> problem with my thresholding levels, would that cause a conflict?
>
> also if i wanted to look at the unthresholded zstat image then what do
> i
> need to register it to in order to view it? i tried standard space
> like with
> the first level thresh_zstat images but that didnt work (using flirt
> -in
> etc....................................................)
>
> andy
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