<div dir="ltr"><div><div><div><div>Dear fieldtrippers,<br><br></div>I recently observed that reading a raw neuromag .fif file with fieldtrip and mne-python (with default settings for both) give exactly the same events separated by the same time (which is good!) but with a different time offset: the zero-point definition for the recording differ between the two softwares. I hypothesize that this difference comes from the convention adopted: fieldtrip would use the "record raw" trigger as a zero-point and mne the "start" trigger that occur earlier (i.e. you can follow the signal but it will be not saved in the file), but I'm not perfectly sure.<br><br></div>As someone already observed this difference?<br>It's harmless because it doesn't affect relative timing of the event but become problematic to transfer recoded events trl from fieldtrip to mne-python with a time-sample matching strategy.<br><br></div>Best,<br><br></div>Baptiste<br clear="all"><div><div><div><div><div><div><br>-- <br>Baptiste Gauthier<br>Postdoctoral Research Fellow<br><br>
INSERM-CEA Cognitive Neuroimaging unit<br>
CEA/SAC/DSV/DRM/Neurospin center<br>
Bāt 145, Point Courier 156 <br>
F-91191 Gif-sur-Yvette Cedex FRANCE
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