I’m doing seed based connectivity analysis and I’m getting the following warning:
UserWarning: Mean values of 0 observed.The data have probably been centered.Scaling might not work as expected
warn('Mean values of 0 observed.
I have indeed centered my data before running FirstLevelModel
. Should I not do it so that nilearn can properly scale the data? Or should I not use signal_scaling
at all for seed based connectivity analysis, in which I only have regressors with (demeaned) time series?