PALM with Freesurfer surface data

Dear all,

I am trying to use PALM with Freesurfer surface data like thickness and volume. I need PALM instead of standard permutations due to twin relation in the sample. I tried using fspalm but I don’t get it to finish without errors.

I would just need an example on how to make the command work, e.g., I don’t know what surface to use as I get an error:

I try

palm -i lh.volume.s5.g3.mgh -d design.mat -t design.con -eb eb.csv -n 1000 -tfce -o test1 -s ?

Also, how should the column of the exchangeability blocks file look like with two group with both pared and unpaired twins both within and between groups.

Thanks in advance,
Julian