i was wondering where the fibers in ACT tractography should have their endpoint. Is the last fiber point supposed to be inside of the 5ttgen GM compartment or directly in front of it in the white matter?
I just filtered an ACT tractogram with as GM mask (5ttgen volume 0 thresholded at 0.5), by discarding all fibers not starting and ending inside of this mask. Many fibers are dsicarded by this filtering, so I suppose ACT forces the fibers to end BEFORE the gray matter?
Thanks for your help!