yes, in some of the parcellations it corresponds to "unknown", which is not cortical (e.g. the medial wall) On Sun, 31 Jul 2011, Matt Glasser wrote:
Zero probably means ?no label.?
Peace,
Matt.
From: freesurfer-bounces@nmr.mgh.harvard.edu [mailto:freesurfer-bounces@nmr.mgh.harvard.edu] On Behalf Of Forrest Sheng Bao Sent: Sunday, July 31, 2011 3:00 AM To: freesurfer@nmr.mgh.harvard.edu Subject: [Freesurfer] label value 0 in annot file
hi,
I noticed an interesting thing today. I used read_annotation function in matlab to load an .annot file, i.e., [Vertexes,Label,Colortable]=read_annotation(AnnotFile);
But some labels in Labels were 0's. They did not appear in the 5th column of Colortable.table. And 0 was the only label that i couldn't find in the 5th column of Colortable.table. All other labels were fine.
Any idea what the cause of 0's as labels might be?
Cheers, Forrest