Dear Jonas,
> > Could you give more detail about what data you are using? I'm afraid I
> > couldn't quite follow what your image data points consist of.
>
> I have attached one of the image files (img+hdr) to give you an
> idea. Its an interpolated surface plot from 3 CSD-traces obtained
> from slice recordings. X-axis is time, Y-axis depth relative to
> cortical surface and the colourcoding corresponds to the current
> source density.
What an interesting idea it was to try this. However, I think the specific
problem you are running into here is that you have a single slice image, and
SPM will not attempt nonlinear transforms without an adequate field of view in
all three dimensions. Indeed, if you are using SPM99b, you should have got a
warning message:
"The field of view is too small to attempt nonlinear registration"
(see the spm_sn3d.m code, line 662)
I think you are going to have to use some specifically 2D method. John A might
have some suggestions?
Best regards,
Matthew
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