Hello,

I was wondering if I could have some clarification on the difference between the volumemeans output (cmassx/y/z from fmriqa_generate.pl) and the volmeasures output (from fmriqa_volmeasures)?

I am trying to use BXH tools to identify absolute motion artefacts in my fmri data - which would you advise would be best for this?

Thank you very much!
Mollie

fmriqa_generate.pl calls fmriqa_volmeasures to generate that data so they should give you similar numbers, however fmriqa_generate.pl may remove some datapoints from the beginning before sending data to fmriqa_volmeasures.  The center-of-mass is a crude measure that can be helpful.  For more accurate position information you may consider tools like FSL's mcflirt.