Fmriprep warning: No single-band-reference found for



Following warning is shown when running preprocessing:
"No single-band-reference found for "



If you don’t have a single-band reference, then this is just a notification. If you do, could you share the tree output for a subject?


We don’t have- I just wanted to know if it’s likely to hurt our results in any significant way.
Thanks a lot!


If you are using a multiband sequence that results in images with low gray/white tissue contrast, acquiring a single-band reference immediately prior to your multiband sequence can assist in any steps that benefit from high contrast, such as BOLD-T1w registration and some susceptibility distortion correction methods (the SyN-based, fieldmap-less correction, for instance).