For pre-/post-designs comparing ALFF and fALFF signal, which would be preferred?  Normalized ALFF/fALFF or non-normalized?  And, is the normalization process considering both pre- and post-data simultaneously or individually (i.e., not averaged over sessions)?What does it mean to have negative raw ALFF results pre-/post-, yet have significant normalized findings for the same type of comparison?  What about vice-versa?  I believe in the case of raw ALFF positive findings, this means greater risk that the results are driven by extremes in the data.  But, I'd like to get my head around what the reverse might mean.Thx,Jeff