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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, Mohamed