is it possible to concatenate averaged fif-files it one single fif-file

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1

Hi there,

i used mne_process_raw to average ERFs from different condition (e.g.
Standard, Deviants, MMNs) into separate fif-files.
Next i would like follow the MNE pipline to do Minimum-norm estimates.
As far as i understood i would have to do an MEG-MRI alignment for
each subject and each averaged fif-file at some point. Would it be
possible to concatenate the averaged fif-files into one single file
for each Subject? Such that i would only have to do the alignment step
once for each subject?
I assume that would be ok to do since the different conditions were
randomly presented during recording and saved in one file in the first
place.

Thank you very much for your time, Matthias

2

Hi Matthias,

You can make a single .fif file containing all of your conditions using
'mne_process_raw --ave [filename.ave]'. You just have to include each
condition in your .ave file. I have included an example .ave file here.

3

I guess you are right. I did not thought it through. Since the
fiducials and HPI coils stay at the some location between conditions
it should be fine.
Thank you, Matthias