Have you been able to extract your data and align it with your volumes. Are you using the ext to mark your onsets On Tue, Nov 29, 2016 at 1:40 PM Signy Sheldon <[log in to unmask]> wrote: Hi all, I am looking for some opinions on the best method for physio correction with data collected on a Siemens 3T that is compatible with SPM. The physiological log files I am working with are Physiological Monitoring Unit (PMU) files (puls, resp and ext (trigger)). Any input is appreciated! Signy