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Dear FSL experts,

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?  

Any comment will be very welcome,

Many thanks in advance,


Mohamed