Both of those contrasts will give you the same p-value. The difference
is if you look at the contrast values themselves (gamma.nii). The first
contrast will give you values in units of mm. The second will give you
values in units of 4*mm.
doug
Per Selnes wrote:
> I'm trying to set ut a freesur
I'm trying to set ut a freesurfer group analysis. In my fsgd file there are
four groups/classes and 2 variables, like so:
GroupDescriptorFile 1
Title
Class Class1
Class Class2
Class Class3
Class Class4
SomeTag
Variables Variable1 Variable2
Input subj1 Class1 49 1
Input subj2 Clas
