Dear FSL community,
I performed a single-session ICA both with Melodic FSL and BrainVoyager.
The visual inspection of the results (Z-map) reveals the presence of one
component representing a mean signal (global signal). This global signal
component is present only in the BrainVoyager results. So, my question
is: does Melodic ICA filter out the global signal? if yes, how does it
do that? How the time courses are normalized in melodic ICA process?
Any comment will be very welcome,
Many thanks in advance,