Hello AFNI users,
I’m running a correlation analysis using the 3dfim+ command and I have some questions about the ideal function.
I'm currently using the whole amygdala as seed region, resulting in 172 ideals. I read in the 3dfim+ documentation that, when there are multiple ideals, “the kth ideal is referred to as the ‘Best Index’, and the program reports the parameters alpha, p, etc., for the Best Index only”.
I'd rather prefer to use as ideal an estimate of the time course of the seed region instead of 172 ideals. Is there a way to estimate the time course of the entire seed region (or a subset of voxels) and use then just one ideal as input in 3dfim+? would the result of this correlation be appropriate?
Thanks,
ns
