Hi, check in the report.log file in both (2nd and 3rd) higher-
level .gfeat directories and find the avmerge command that creates
the bg_image file - this should tell you what images were fed into
bg_image.
Cheers, Steve.
On 12 Mar 2007, at 22:29, Stephane Jacobs wrote:
> Hello everyone,
>
> I'd like to check what exactly is the example_func file within each
> copeX.feat directory output by higher level analyses. When
> searching the
> archives, I found that quote from Mark Woolrich:
>
> "In higher-level analyses example_func.* in the copeX.feat dirs is
> soft
> linked to bg_image.* in the gfeat dir. The bg_image.* is the
> background
> image specified by the user in the GUI for rendering purposes (goto
> Post-stats tab on the Feat GUI).
> By default it is the group mean structural brain warped into
> standard space.
> Other options are available."
>
>
> That's what I expected, however I'm a bit surprised by how good and
> clear my
> bg_image looks at the output of a 3rd level analysis averaging
> across 20
> subjects... The Post_Stats option in FEAT was indeed set to MEAN
> HIGHRES, as
> it is by default, but I wonder if there could be a way this file is
> not what
> it's supposed to be (e.g. an individual high-res...).
>
> I can definitely upload the file if necessary. Any comment would be
> greatly
> appreciated.
>
> All the best
>
> Stephane
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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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