Hi,
I think we would need to see the design matrix and time series plot to
comment on this - in general I would not expect that....
Cheers, Steve.
On 14 May 2008, at 22:42, Carlos Faraco wrote:
> I am looking at some fMRI timeseries plots and am having some
> difficulty
> interpreting them. I have two conditions which I am specifying, when I
> compare them against baseline I get the appropriate full and cope
> partial
> model fits. However, when I compare conditions, the highest positive
> peeks
> of the cope partial model fit occur during the timeponts of the
> condition
> specified as -1 in that comparison. This occurs even though the data
> timepoints do not fit that model.
>
> Can somebody explain why this is happening?
>
> Thank you,
>
> Carlos
>
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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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