I have a question about extracting global lgi values/hemisphere. I think I have managed to do it correctly using :

 mri_segstats --slabel subj lh $SUBJECTS_DIR/subj/label/lh.cortex --i $SUBJECTS_DIR/subj/surf/lh.pial_lgi --sum lh.aparc.pial_lgi.stats

(Please let me know if this is not correct)

I then get this output ( for each individual)

 ColHeaders  Index SegId NVertices Area_mm2 StructName Mean StdDev Min Max Range  
  1   0      7953     5220.0  Seg0000     2.4055     0.4052     1.5796     2.9763     1.3967 

  2   1    156737   101379.9  Seg0001     2.9472     0.9038     1.7030     6.0007     4.2977 

I assume one of these values (if above command has worked correctly) contains the mean lgi value for the left hemisphere. Can somebody please tell me which of the above values is the correct lgi value? Additionally, what units are lgi measured in, and are values between 1-5 what is considered normal?

Thank you very much