Dear SPMers,
I am aware of conventions for discarding scans with too much residual motion in terms of translation, but can you suggest a reference for a convention on acceptable residual rotation estimates?
Although the two sets of motion parameters probably go hand in hand for a given subject (i.e. if there is lots of translation, rotation might feature as well), how can I deal with cases where either translation or rotation is problematic? Should I discard as soon as one of the two estimates is deemed too much or might there be a convention where one is viewed less problematic than the other? Intuitively I'd think that both sets of estimates are equally important, but it would be great to hear your views and suggestions.
Thank you very much!
Loreen
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