Hi again,
I understand using the grey matter only reduces error and smooths better. However, I wonder if you must use afni_proc.py for a surface analysis or can you simply use ALL the regular afni commands like 3dcalc, 3dDeconvolve, FDR etc. except for the special surface commands like SurfSmooth etc. but what would you input into these commands-- will they assume a surface dataset is the same as any usual input? Also, by using 3dVol2Surf we convert timeseries datasets to what? a statistic on each surface node? If, that is true how do you do 3dDeconvolve after this command? I am sorry but I am just learning about this stuff and it seems harder than I thought---confusing I suppose. I really appreciate any help you can give.
Thanks everyone....