Re: [Freesurfer] Significance of value in sig.nii file under 'polar' directory

They are compared against 0 (ie, no change from baseline). The negatives just mean that the real component was negative doug

On 12/03/2013 06:21 PM, Cesar Echavarria wrote:

So I want to figure out which voxels were modulated significantly by the orientation of our stimuli. Is this the right file to look at? If so what are the real and imaginary components compared against? I want to know to make sense of the negative values.

On Dec 3, 2013 5:52 PM, "Douglas N Greve" <greve@nmr.mgh.harvard.edu mailto:greve@nmr.mgh.harvard.edu> wrote:

  It is the -log10(pvalue) where pvalue is the p-value from the F-test
of the real and imaginary components
doug





On 12/03/2013 05:41 PM, Cesar Echavarria wrote:
> Hi freesurfers,
>
> I conducted a retinotopic analysis for one of my subjects. I was
> wondering if any of you knew what is represented by the values
in the
> sig.nii file under the 'polar' directory that the process puts out.
>
> I appreciate your help!
>
> Cesar
>
>
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