Hi, I'm trying to figure out the answer to a couple of questions I've had for a while now. I've been analyzing data on the cortical surface using a standardized mesh of -ld (linear division) of 125.
My first question is:
What is the actual grid size of this standardized mesh, in nodes/mm^2 (or in some other more appropriate metric)?
My second question is:
I'm assuming from previous message board posts that higher mesh densities (like -ld 141, which is one of the default outputs of @SUMA_make_spec_FS) more closely approximate the original mesh density of most input cortical surfaces. If this is the case, then if we transform and analyze typical epi data on a cortical surface with this mesh density, are we essentially resampling (and possibly oversampling) the epi data (typically with original grid size of 2x2x3 mm^3 or higher) to the anatomical resolution (which is typically around 1x1x1 mm^3)? Or am I completely missing the point here?
Jason