2 Jun
2012
2 Jun
'12
9:43 p.m.
Hi,
I have another silly question. When a functional overlay (say, log p-value map) is loaded to tksurfer, how exactly are the surface vertex values computed? using simple interpolation of the loaded map? or is it something more fancier, like looking along the normal of each surface face and taking the maximum/minimum? The reason I'm asking is because if surface vertices are interpolated exactly using the loaded volume, they don't fall on gray matter (right? either I use the white matter surface or the pial surface, where activation should be in between...)
Thanks in advance,
Shay Tsao Lab Caltech