How to change the annotations/events of EEG data with MNE

💬 Support & Discussions
1

Dear MNE experts,

I’m using MNE to process EEG/ERP data and need to change the annotations/events of the raw data. I changed the values and ID of events and saved the raw data as a new file. But when I load the data again, the events data I saved seems changed. Did you guys encounter this kind of problem?

The codes I used to change the events and id are as follows:
raw = read_raw_edf(f,preload=True)
events, event_id = mne.events_from_annotations(raw)
events = [[177239,0,2],
[183835,0,2],
[190428,0,2]]
event_id = {‘Left’:1,‘Right’:2}

  • MNE version: mne 1.0.3
  • operating system: Windows 10
2

How did you save to a new file? Did you export to EDF or save to FIFF?

3

I exported it to an EDF file

4

Events are not preserved when exporting to EDF. You need to edit the annotations and then export to EDF. What exactly do you want to change?