a quick update. the following fiddle will show the number of subjects that have an identical the same Right Amygdala volume. It simply plots a histogram of the counts per volume (scroll to the bottom of the result window).

http://fiddle.jshell.net/satra/MXKY6/6/

cheers,

satra


On Mon, Jul 8, 2013 at 1:07 PM, Satrajit Ghosh <satra@mit.edu> wrote:
hi,

trying to figure out the likelihood of identical subcortical volumes across individuals. i'm noticing this in some data processed with FreeSurfer 5.1.0.

just to give some probabilities - these are out of about 963 participants.

and there are several such small clusters of identical numbers - never exceeding 6 participants i believe.

cheers,

satra

0021003aseg.statshttp://freesurfer.net/fswiki/terms/Right-Hippocampus "4142.0"^^<http://www.w3.org/2001/XMLSchema-datatypes#float>
0015035aseg.statshttp://freesurfer.net/fswiki/terms/Right-Hippocampus "4142.0"^^<http://www.w3.org/2001/XMLSchema-datatypes#float>
3976121aseg.statshttp://freesurfer.net/fswiki/terms/Right-Hippocampus "4142.0"^^<http://www.w3.org/2001/XMLSchema-datatypes#float>

1623716aseg.statshttp://freesurfer.net/fswiki/terms/Right-Amygdala"1603.0"^^<http://www.w3.org/2001/XMLSchema-datatypes#float>
0023005aseg.statshttp://freesurfer.net/fswiki/terms/Right-Amygdala"1603.0"^^<http://www.w3.org/2001/XMLSchema-datatypes#float>
0023008aseg.statshttp://freesurfer.net/fswiki/terms/Right-Amygdala"1603.0"^^<http://www.w3.org/2001/XMLSchema-datatypes#float>
0027025aseg.statshttp://freesurfer.net/fswiki/terms/Right-Amygdala"1603.0"^^<http://www.w3.org/2001/XMLSchema-datatypes#float>
1341865aseg.statshttp://freesurfer.net/fswiki/terms/Right-Amygdala"1603.0"^^<http://www.w3.org/2001/XMLSchema-datatypes#float>
2947936aseg.statshttp://freesurfer.net/fswiki/terms/Right-Amygdala"1603.0"^^<http://www.w3.org/2001/XMLSchema-datatypes#float>