[Mne_analysis] Viewing running t-test on a movie?

[Jon Houck]

You may want to convert your t-scores to z-scores.  This would preserve the
directionality of your results and present your results in (relatively)
easily interpretable effect size units, while still permitting the kind of
scaling that you want.

Jon




On Thu, Sep 8, 2011 at 7:44 PM, Alexandre Gramfort <
gramfort at nmr.mgh.harvard.edu> wrote:

> I agree with the -log(p) or even better -log10(p) so a value of 2 means
> 0.01.
>
> Alex
>
> On Thu, Sep 8, 2011 at 5:45 PM, Hari Bharadwaj <hari at nmr.mgh.harvard.edu>
> wrote:
> > Instead of writing the p-values, if you made stcs out of 1-p or -log(p)
> or
> > just write the raw t-values or any other transformation where
> > 'higher-is-more-significant', it will be easier to threshold and make
> > movies out of using mne_make_movie or even visualize using mne_analyze
> > since that
> >
> > Regards,
> > Hari
> >
> >
> > On Thu, September 8, 2011 5:23 pm, Per Lysne wrote:
> >> Hello,
> >>
> >>     I would like to use a t-test to compare two groups, and to view the
> >> resulting 'p' values as the color scale on a movie. All of my subjects
> are
> >> morphed onto the fsaverage cortical surface. I have performed the
> >> timewise,
> >> vertexwise t-test between the groups and written the p-values as an stc
> >> file. Is there a way to input this directly into mne_make_movie such
> that
> >> the magnitude of the p-values will be displayed in colors? (i.e. p<.05
> as
> >> red, p<.01 yellow, etc.) If I ask for the raw mne output from
> >> mne_make_movie, with no baseline correction, and set the color scale
> >> appropriately, is this what I will get?
> >>
> >>     Thanks again,
> >>
> >> Per Lysne
> >> University of New Mexico, MIND Research Network
> >> _______________________________________________
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> >
> >
> > --
> > Hari Bharadwaj
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