Hi FSL Experts,
I have a quick question about using MELODIC to identify and remove (via fsl_regfilt) motion and other artifact components from functional EPI data:
Is it better to leave on "automatic dimensionality estimation" and let MELODIC determine the number (~105-115) or turn it off (and choose 40 components)?
Doing it the latter would certainly be faster (as there would be about a 1/3 as many to components to review), but I am worried that it might increase the risk that artifacts would be grouped with task-related signal. Thanks!
Cheers,
Pete
Dept. of Anatomy & Neurobiology
Boston University School of Medicine
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