[pymvpa] search-light vs. ROI analysis: significance puzzle

Michael Hanke michael.hanke at gmail.com
Tue Feb 26 12:02:52 UTC 2013


does anyone have Python code for putting this as a feature into PyMVPA's
searchlight. In this past I have been using the 'scatter ROIs' feature
quite a bit to speed up analysis and get a the big picture faster. It would
be lovely to have this way of representing the results combined with
scattering of searchlights.


On Tue, Feb 26, 2013 at 12:47 PM, Malin Björnsdotter <
malin.bjornsdotter at neuro.gu.se> wrote:

> > In my method, the hitrate is assigned to all the
> > voxels in the light and given that each voxel participates in many
> lights,
> > the hitrates are averaged. So, using my method a voxel hitrate reflects
> many
> > possible environments. I try to compare the results of both and so far it
> > seems that with your method the results are more patchy.
> That sounds pretty much exactly as what I've been doing. :-) Jo has an
> excellent blog entry about this:
> http://mvpa.blogspot.sg/2012/09/random-searchlight-averaging.html
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