Hi - the recommended approach is to analyses the separate runs with
separate first-level FEAT analyses (and NOT try to combine them
temporally before analysing), then combine across runs (within
subject) using a second-level fixed-effects analysis - then you can
combine across subjects at the third level. See the 3-level example
in the FEAT manual.
Cheers.
On 21 May 2009, at 17:17, Hongyu Yang wrote:
> Dear FSL experts,
>
> We obtained two parts of fMRI data during one session because of
> technical
> problems. The data is very good, so I am trying to use it. Can I run
> the two
> data with first analysis, then I run them with higher analysis, and
> finally can I
> make group analysis with this higher analysis (gfeat file) and other
> subjects'
> first analysis (feat files)? I am not sure about whether FSL can
> accept this.
> Maybe we can first connect the two fMRI data, produce combined
> behaviroal
> data, and then analyze it with first analysis? which method is better?
>
> I appreciate your kind response very much.
>
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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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