Hi - the modelling in randomise is ALWAYS a regression (single or
multiple depending on the number of covariates you enter in the design).
See the randomise manual for explanation of output filenames. When
you run a regression the fitted parameter estimates are turned into t-
statistics as part of the thresholding process.
Cheers.
On 17 Aug 2009, at 09:19, Reut Granot Halevy wrote:
> Hi
> while trying to perform a TBSS analysis and correlate a single group
> of
> subjects's FA maps with its behavioral test scores I used the
> following
> randomise command:
> randomise -i all FA_skeletonised -o tbss -m mean_FA_skeleton_mask -d
> design.mat -t design.con -n 5000 -c 3 -V
> the result maps I got are named: tbss_clustere_corrp_tstat1
> does it mean it performed a t test instead of correlation?
> I didn't find an explanation about haw to make the randomise command
> perform a simple correlation test and not t test
> did I use the right randomise comand? should i add something?
> I created the design using the GLM GUI and it contained one group
> and 2
> events (one for each behavioral test)
> hope it's not too confusing
> reut
>
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Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
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