[Freesurfer] Problem with setting segmentation threshold values

Hi,

I am interested in changing the white matter low limit for the segmentation step. For this I typed the following in the command prompt:

recon-all -subjid <subjectname> -autorecon2 -seg-wlo <low limit value>

this gave me an error stating that it could not recognize -seg-wlo flag. I was wondering if there is a mistake in writing the command?

I would also like to know if there is any default lower limit for gray matter threshold used my mri_segment? If so what is it and can it be changed?

Thank you.

Dhruman

Dhruman D. Goradia

Research Specialist

Western Psychiatric Institute and Clinic

3811 O'Hara St Suit 431

Pittsburgh PA 15213.