[Eeglablist] How to keep events when epoching

Arnaud Delorme arno at ucsd.edu
Tue Apr 23 13:08:06 PDT 2019

Yes, this is exactly what EEGLAB does. If you import a continuous dataset, you can then extract data epochs on event of interest and, after the epochs are created, the events will still be present. There will be exactly one event per epoch, unless the epochs overlap, in which case, some events might be present in multiple epochs.

Best wishes,


> I have continuous eeg data and one event. When epoching before and
> after this event then every epoch will keep it's event. Meaning let's
> say I epoch -100 ms before and +100 ms after each event then I get
> each epoch containing one event.
> However when epoching for a range between +100 ms after the event and
> +200 ms after the event, then the new epoch won't contain any event. I
> need it to keep it's event. So that although it doesn't contain the
> event but I want to insert the event in the new epoch possibly at the
> beginning or the end of the epoch. It doesn't matter where. Is it
> possible to do this in eeglab.

> Thanks for help
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