[pymvpa] How you run permutation test for search-light analysis?

Vadim Axel axel.vadim at gmail.com
Sun Mar 25 08:56:04 UTC 2012


When I run a whole-brain search-light analysis with non-overlaping lights
(each voxel participates only in one light) I get about 3000 lights (half a
hour classification). Running 1000 times such permutation analysis would
obviously take weeks.  And this is a limited non-overlapping lights case.
Is there any more realistic approach? I found here that people ran
permutation analysis only 10 times while they stack the predictions of all
voxels together to have their chance distribution:
(see "Searchlight analysis" section second paragraph). Does it make sense
for you?

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.alioth.debian.org/pipermail/pkg-exppsy-pymvpa/attachments/20120325/48fc36e0/attachment.html>

More information about the Pkg-ExpPsy-PyMVPA mailing list