Hi Michael
Regarding the number of bins (SPM.xBF.T) and sampled bin (SPM.xBF.T0),
these can be specified in the GUI when you set up your first level
analysis. They are listed under "timing parameters" and called
"microtime resolution" and "microtime onset" respectively. If you are
using batch scripts and don't explicitly set these fields ahead of
time in SPM.xBF, spm_fMRI_design uses default values of SPM.xBF.T = 16
and SPM.xBF.T0 = 1:
% global parameters
%-----------------------------------------------------------------------
try
fMRI_T = SPM.xBF.T;
fMRI_T0 = SPM.xBF.T0;
catch
fMRI_T = 16;
fMRI_T0 = 1;
SPM.xBF.T = fMRI_T;
SPM.xBF.T0 = fMRI_T0;
end
Hope this helps,
Jonathan
On Sun, Sep 28, 2008 at 10:45 PM, Michael Andres
<[log in to unmask]> wrote:
> Dear all,
>
> I have switched from SPM2 to SPM5 and I was wondering how to set the Default options for
> the 1st and 2d-level analysis.
>
> In SPM 2, I used to define the upper tail F probability, the number of slices (Nb of bins) and
> the reference slice (sampled bin) in the Defaults area called "Stats fMRI" before completing
> the design matrix.
>
> I did not find any trace of this process in the Defaults menu of SPM 5.
>
> Before going further with the data analysis, I would like to know how this information (nb of
> slices, reference slice) is taken into account by SPM 5 when specifying the model ?
>
> Michael
>
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