Hello,
I'm trying to learn to preprocess fMRI data with AFNI.
I'm at 'outcount' stage, and have a question about deciding the order of Legendre polynomial for the option, -polort in 3dToutcount function.
I've heard that the order of polynomial varies according to the total length of time series of fMRI data and that it can be calculated through an equation.
But I can't find the equation in internet and I wonder how I can give the order to AFNI.
Could you let me know how to decide the most appropriate order of Legendre polynomial when I use 3dToutcount? Is there an equation which helps to get the polynomial order?
Thanks!