Exactly.
Cheers,
Gwenaelle
--- Jiansong Xu <[log in to unmask]> a écrit :
> Thanks. Did you mean to subtract mean RT from RT of
> each subject by
> saying "demeaned" RT?
>
>
> Best
>
> Jiansong Xu, M.D., Ph.D.
> Associate Research Scientist
> Dept. of Psychiatry
> Yale School of Medicine
>
> Connecticut Mental Health Center, Room S-100
> 34 Park St.
> New Haven, CT 06519
>
>
>
>
>
>
>
> On Feb 4, 2008, at 9:20 AM, Gwenaëlle DOUAUD wrote:
>
> > Hi,
> >
> > please have a look first at :
> > http://www.fmrib.ox.ac.uk/fsl/randomise/index.html
> > Basically, what you need to do is to put simply
> the
> > *demeaned* RT for your 16 subjects in a design
> matrix
> > desing.mat and look for positive (I guess?)
> > correlation by setting up the contrast at 1 in
> your
> > design.con.
> >
> > Then all you need to do is run randomise on your
> > *demeaned* tbss data (with the -D option):
> > randomise -i all_fa_skeletonised -m
> > mean_FA_skeleton_mask -o yourresults -d design.mat
> -t
> > design.con -D -n 5000 -V and for the correction
> for
> > multiple comparisons, please have a look at the
> manual
> > (-T or -c 2 for instance).
> >
> > Hope this helps,
> > Gwenaelle
> >
> >
> > --- Jiansong Xu <[log in to unmask]> a écrit :
> >
> >> Dear Friends:
> >>
> >> I'm trying TBSS. With the help of friends from
> this
> >> list, I have
> >> reached after tbss_4_prestats successfully (It is
> a
> >> major achievement
> >> for me!!). Now, I'm trying to assess the
> correlation
> >> between FA and
> >> reaction time of each subject. Could any one give
> me
> >> some suggestions?
> >> I have single group of 16 subjects.
> >>
> >>
> >> Best
> >>
> >> Jiansong Xu, M.D., Ph.D.
> >> Associate Research Scientist
> >> Dept. of Psychiatry
> >> Yale School of Medicine
> >>
> >> Connecticut Mental Health Center, Room S-100
> >> 34 Park St.
> >> New Haven, CT 06519
> >>
> >
> >
> >
> >
> >
>
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