Dear freesurfer users,
     I have a question about the design matrix.We want to  analyse the relationship between the cortical thickness and the neuropsychological test. We have two groups:TLE and extralTLE,one discrete variable:gender,and two continuous variable: neuropsychological test and age.      
     we make the FSGD files like this:
     Title OSGM
   Class MaleTLE
   Class MaleextraTLE
   Class FemaleTLE
   Class FemaleexatrTLE
   Variables Age Neuropsychology
   Input subject1 MaleTLE 30  5
   Input subject2 MaleextraTLE 40 6
   Input subject3 FemaleTLE 50 8
   Input subject4 FemaleLextraTLE 60 7
     Is it right? And we want to analyze the relationship between the cortical thickness and the neuropsychology  regressing out the effects of gender and age, how to make the design matrix?

Look forward to your reply.
Sincerely,
Kan Deng