I'm a first time fMR researcher and FSL user.
Just had a couple of questions re: registration as implemented in FEAT.
1. I'm following the recommedations to register the epi to the template
via the hi-res structural. How well stripped (using BET) does the
structural have to be? I am often left with residual bits of non-brain
tissue (especially neck) and I was wandering whether this would greatly
affect the registration results for my purposes (ie., epi to template).
Would manually removing non-brain tissue be worthwhile? (playing with FIT
and g still doesn't yield great results in many cases, unless I'm doing it
2. Are there any rules of thumb re: determining what's a minimally
acceptable registration? Are minor deviations around the edges ok,
provided there isn't evidence of gross misalignment? How large would these
minor deviations have to be before they are considered problematic? Are
there any examples of bad, or (just) decent registrations on your website?
Many thanks for your help - am enjoying the software!