I watched an episode of The Big Bang Theory last night where Dr. Sheldon Cooper was airing an episode of “Fun with Flags,” which gave me the idea for today’s blog post title.  A while ago, I detailed how to create ROIs in AFNI using a variety of different methods.  And I even included a […]

Admittedly the title is a little bit opaque, you can already use afni_proc.py to have some of your regressors use the GAM basis function and others to use another basis function (e.g. SPM).  But one thing that I find helpful is to compare a standard basis function (e.g. GAM, SPM, SPMG2, etc) with an FIR […]

For those keeping track at home, an ROI involves selecting a section of the brain (or subset of voxels) that you have some interest in.  The ROI can be a geometric shape or drawn by hand.  It can be defined by anatomical markers or by functional activation or really by anything you want. AFNI has […]

So after last time, you successfully ran a group-level analysis that you feel fits your scientific question and now you want to know what will survive statistical scrutiny. Well the good news is that you have a few options! First, in order to get any of these options working, you should start by running your […]