Hi
For the 1st level you simply need a 3 regressor GLM (you don't model fixation) and use this as the timeseries model.
The second level then is a simple paired t-test and you can enter this as the subject/session model,
hth
Christian
On 29 Nov 2010, at 12:07, Silvia Juanes wrote:
> Dear all,
>
> I have a question about defining Glm for an ICA-MELODIC analysis.
>
> Each subject was scanned twice under two different stimulation treatments. This factor is at the 2nd level.
>
> In each fMRI session there are four conditions (block design): fixation, motor condition, spatial working memory, verbal working memory.
> This factor is at the 1st level.
>
> I would like to see the interaction between type of working memory (spatial/verbal) and stimulation treatment.
>
> How can I define this in the Glm?
>
> Many thanks,
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