open-discussion
open-discussion > RE: File/Overlay (Remove Small Clusters) missing?
Sep 9, 2019 07:09 PM | mullinsr
RE: File/Overlay (Remove Small Clusters) missing?
Originally posted by Chris Rorden:
Assuming your statistical map is lower
resolution than the background image, I would strongly encourage
you to threshold the data AFTER it has been upsampled, rather than
BEFORE. Due to spatial smoothing, the non-significant neighbors of
significant voxels are very likely to be ALMOST significant.
However, this information is lost when you threshold the data. If
you plan to upsample data that has been already thresholded, I
would male sure you have "Load Smooth Overlays" unchecked in the
"Options" pulldown of the "Layers" panel. The overlays may appear
jagged if you do not smooth them, but smoothing data that has been
masked can be misleading. You want the interpolation to work with
all the available data.
I mention this briefly in the cluster threshold scripting page.
Good point, I had not considered
this.I mention this briefly in the cluster threshold scripting page.
Threaded View
Title | Author | Date |
---|---|---|
mullinsr | Sep 5, 2019 | |
Chris Rorden | Sep 5, 2019 | |
mullinsr | Sep 9, 2019 | |
Chris Rorden | Sep 5, 2019 | |
mullinsr | Sep 5, 2019 | |