Dear FSL Experts,
I wondered if you might be able to help me with a query I have regarding
the independent components from MELODIC output. I have run the multi-
subject temporal concatenation approach on a group of subjects and I get an
output with 42 components, however if I change the order I upload the 4D
image files in I only get 36 components. In addition if I split these
subjects into 2 groups I get 45 and 48 components respectively. Also, none
of the components match with each other, i.e. all IC 1's are not the same
and so on.
Would you recommend preselecting the number of components? If so how many
would you select? Or using the eigenvalue graph or the percentage explained
variance values to select a cut off?
Many thanks in advance,
Eva
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