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Hi Ged,
Yes, I can create the appropriate contrasts in the contrast manager adding few zeros.
I was just wondering if it would be possible to get the appropriate pre-defined contrasts to save some time !
I hope Volkmar will respond to me if this a really a bug !
Thank you very much for your response.
Sincerely yours,
Cédric
> Message du 08/01/07 11:58
> De : "Ged Ridgway" <[log in to unmask]>
> A : "Cédric Lemogne" <[log in to unmask]>
> Copie à :
> Objet : Re: [SPM] problem covarying out the realignement parameters
>
>
> Hi Cédric,
>
> It doesn't sound to me like you're doing anything wrong, it might well
> be a bug... hopefully someone like Volkmar will reply if so.
>
> In the mean time, can you simply create new contrasts yourself in the
> contrast manager and use these instead of the pre-defined ones? It's
> probably just necessary to create ones with the same pattern of
> non-zero values but some extra zeros to pad to the correct length.
>
> Hope that helps, and that you get a more conclusive answer,
> Ged.
>
>
> Cédric Lemogne wrote:
> >
> > Dear all,
> >
> > I have a problem when using the "multiple conditions" option and the
> > "multiple regressors" option together to set a factorial design.
> >
> > Actually I would like to use the "multiple regressors" option to model
> > the realignment parameters as confounds
> >
> > When I use these 2 options for a single session, it works well and the
> > required contrasts are created.
> >
> > However, when I try to do the same for more than a single session, the
> > contrats are created without taking these regressors into account.
> >
> > In other words, the contrast vectors length is shorter than the total
> > number of regressors.
> >
> > What I am doing wrong ?
> >
> > Any help would be much appreciated !
> >
> > Cédric
> >
>
>