[VoxBo] buggy makeGmatrix utility?
Dongbo Hu
dongbo at mail.med.upenn.edu
Wed Sep 10 12:37:29 EDT 2008
On Wed, Sep 10, 2008 at 11:31 AM, BRAD POSTLE <postle at wisc.edu> wrote:
> For several GLMs that we've run recently, the shape of the "param" displayed in the Voxel Surfer does not correspond to the shape of the HRF that was loaded at the "convolve Diagonal set covariate(s)" step in the "set up diagonal set options" gui. And so seemingly the wrong filter was used to smooth the covariates of interest in the G matrix. Is this a previously documented behavior? (and if 'yes' is there a fix; if 'no' what might we do to circumvent it?)
>
I am not familiar with the Voxel Surfer interface, but the HRF used to
convolve diagonal set when making the G matrix is shown below the
"convolve Diagonal set covariate(s)" selection box. Be default the
filter files are located in the directory of
<voxbo_installation_dir>/elements/filters. (Of course you can also
load your own filter file.) So you can double check to make sure this
is the filter that you really want to use.
Hope this helps.
Dongbo
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