afni.nimh.nih.gov

I used afni_proc.py to process my data, followed by registration to a template using ANTS. Data looked normal up until this point. I then ran functional connectivity analysis on the data, including 3dfim+. the images output by this command look like this with some voxels with an Olay value of 0, which doesn't seem right. Does anyone know why that would happen or how to fix it? Thank you.