Ignacio,
I think there are 2 things you should keep in mind: (1) the mask
computed by FSL is pretty liberal, meaning it is larger than the brain,
hence it is possible that some activations appear to lie outside the
brain. (2) It is possible that you are having problems with
coregistration, so make sure you check your first level registration
results.
Also, try searching through the list's archive for "activation outside
brain" or something like that, I'm pretty sure there were at least a few
recent posts about it.
cheers
martin
--
“Well! I’ve often seen a cat without a grin,” thought Alice, “but a grin
without a cat! It’s the most curious thing I ever saw in my life!”
[Lewis Carroll, Alice in Wonderland]
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Martin M Monti, PhD
MRC Cognition and Brain Sciences Unit
15 Chaucer Road
Cambridge, CB2 7EF
Off. +44 (0) 1223 273646
http://www.mrc-cbu.cam.ac.uk/people/martin.monti/home.html
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