Dear FreeSurfer experts,

I want to calculate Euler numbers for QC but I am not sure how to get them. I read some posts here and figured out that I get the number of holes in a surface with mris_euler_number -o $OUTPUT_FILE $subject/surf/?h.orig.nofix. Is it correct that I need to calculate the Euler number subsequently as the sum of holes of both surfaces and then Euler_number=(number_of_holes*(-2)) -2 ?

Best, Melissa