Hi Afni Experts,
I was interested in warping a subjects EPI data to T1 image (Limited to Level=1 so not overwarped) however when I looked at the X Y and Z components of the deformation fields they were not what I expected. Having used 3dQWarp for warping T1 images to MNI space I can generally make out gross anatomical boundaries and the warp fields look similar to the shape of the brain. However when using this method for warping an EPI image to T1 (evaluation purposes only...not actually used in any pipeline/analysis) to compare some corrections I made to see how close they were to the T1 images, I found the warp fields looked more like dipoles in the X Y and Z direction. The jpegs did not attach here, but I wanted to see if this is what you would expect given that only Level=1 corrections were applied.

Thanks,
Ajay