Hi - the fitted full model reflects the data, so if you change the data
(eg by smoothing, whether temporal or spatial), you will expect to see
a different fitted model (both full and partial, in general).
Thanks, Steve.
On Fri, 25 Apr 2003, Richard Albistegui-DuBois wrote:
> I have noticed that, when I look at the time course results in the
> FSL-generated report, the shape of the "Full model" varies based on the
> analysis options I have chosen. Specifically, it seems to change when
> spatial smoothing is turned on and off. The "Partial model" doesn't
> seem to vary, although I have not checked it carefully.
>
> I don't see any reason why spatial smoothing should affect the model
> timecourse, so I have to assume that I don't understand the difference
> between the partial and full models. Can someone help me? Or, if this
> is a truly basic issue, point me to a web page or FAQ?
>
> Thanks again.
>
> Richard Albistegui-DuBois
> UCLA Brain Mapping
> 660 Charles Young Drive South, Room 237
> (310) 206-4456 phone
> (310) 794-7406 fax
> [log in to unmask]
> AIM: dubistegui
>
Stephen M. Smith MA DPhil CEng MIEE
Associate Director, FMRIB and Analysis Research Coordinator
Oxford University Centre for Functional MRI of the Brain
John Radcliffe 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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