I think this will depend on exactly what model you created - can you
send the design.png and we can take a look.
Cheers.
On 21 Nov 2007, at 19:08, Steve Green wrote:
> FSL Group,
>
> Hello, I have a complicated study design that I am uncertain how to
> setup.
> The study has three factors with each factor having two levels. What
> makes
> this a difficult design to setup in FSL is that one factor is
> between groups
> while the other two factors are within group.
>
> I believe the proper approach is to analyze all the conditions in
> one large
> .fsf design file. Reviewing the website material I attempted to
> blend the
> 1x2 unpaired group layout with a 2x2 within group. When I submitted
> the
> model FSL mentioned something about linearity and refused to run.
>
> I was hoping that you guys could tell me two things.
>
> 1. If using the approach of throwing everything into one model is the
> proper way to go about analyzing this data in FSL.
> 2. If this approach is proper then I was hoping you suggest how one
> should
> setup a 2x2x2 where on of the levels is between groups while the
> other two
> are within group.
>
> Any help would be appreciated.
>
> Steve
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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
+44 (0) 1865 222726 (fax 222717)
[log in to unmask] http://www.fmrib.ox.ac.uk/~steve
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