On Fri, Mar 05, 2010 at 04:35:58PM -0500, [email protected] wrote: > I have a quick question about searchlights. I'd like to do an analyis > where the sphere centers are restricted by one mask and the sphere > extents are restricted by another mask. More specifically, I want to > do the searchlight for each voxel in a slice, but when it's doing each > voxel, the searchlight radius should not be restricted to that slice, > just restricted to the brain. Is this an off-the-shelf capability?
Yes it is. http://dev.pymvpa.org/examples/searchlight.html Quote: | In this example, we do not want to compute full-brain accuracy maps, but | instead limit ourselves to a specific subset of voxels. We’ll select all | voxel that have a non-zero z-stats value in the localizer mask we loaded | above, as center coordinates for a searchlight sphere. These spheres | will still include voxels that did not pass the threshold. the localizer | merely define the location of all to be processed spheres. Just come up with a slice mask to replace the z-stats. HTH, michael -- GPG key: 1024D/3144BE0F Michael Hanke http://mih.voxindeserto.de _______________________________________________ Pkg-ExpPsy-PyMVPA mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/pkg-exppsy-pymvpa
