Hi
have a look at http://www.fmrib.ox.ac.uk/fsl/feat5/
detail.html#ANOVA3factors2levels
cheers
Christian
On 23 Jul 2007, at 21:33, Sophie Anisa wrote:
> Hello
>
> I have another query. After perusing the FSL mailing list I am left
> ambiguous as to whether or not it
> is possible to set up a full 2x3 factorial design at higher level
> in Feat? I can see various emails
> about this, but if it is possible it is not clear to me exactly
> what the design matrix would look like?
> Can somebody advise me?
> To be clear, I have an experiment that consists of 6 separable
> conditions -
> 2 different tasks (A and B) with 3 different sorts of stimuli (1,2,3):
>
> Stimuli Type
> Task A1 A2 A3
> B1 B2 B3
>
> I am interested in three questions of interest:
>
> (1) Is there an effect of task, irrespective of stimuli type?
> (2) Is there an effect of stimuli type, irrespective of task?
> (3) Is there an interaction between the two?
>
> which seems to me to be a standard ANOVA design.
>
> If one cannot set this up as a factorial design, is there a preferred
> alternative in FSL to get at my questions of interest?
> kind regards
>
> Sophie
>
>
____
Christian F. Beckmann
University Research Lecturer
Oxford University Centre for Functional MRI of the Brain (FMRIB)
John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK.
[log in to unmask] http://www.fmrib.ox.ac.uk/~beckmann
tel: +44 1865 222551 fax: +44 1865 222717
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